update travis.yml

In short this updates `travis.yml`'s indent size to 2 spaces as per
WordPress' development repo and Jetpack.
Inserts final newline.
Uses a period at the end of each sentence.

.travis.yml

@@ -1,7 +1,7 @@
-# Travis CI (MIT License) configuration file for the Underscores WordPress theme
+# Travis CI (MIT License) configuration file for the Underscores WordPress theme.
 # @link https://travis-ci.org/
 
-# For use with the Underscores WordPress theme
+# For use with the Underscores WordPress theme.
 # @link https://github.com/Automattic/_s
 
 # Declare project language.
@@ -10,41 +10,41 @@ language: php
 
 # Declare versions of PHP to use. Use one decimal max.
 php:
-    # aliased to a recent 5.5.x version
+  # aliased to a recent 5.5.x version
-    - "5.5"
+  - "5.5"
-    # aliased to a recent 5.4.x version
+  # aliased to a recent 5.4.x version
-    - "5.4"
+  - "5.4"
-    # aliased to a recent 5.3.x version
+  # aliased to a recent 5.3.x version
-    - "5.3"
+  - "5.3"
-    # Current $required_php_version for WordPress: 5.2.4
+  # Current $required_php_version for WordPress: 5.2.4
-    - "5.2"
+  - "5.2"
 
 # Declare which versions of WordPress to test against.
 # Also declare whether or not to test in Multisite.
 env:
-    # Trunk
+  # Trunk
-    # @link https://github.com/WordPress/WordPress
+  # @link https://github.com/WordPress/WordPress
-    - WP_VERSION=master WP_MULTISITE=0
+  - WP_VERSION=master WP_MULTISITE=0
-    - WP_VERSION=master WP_MULTISITE=1
+  - WP_VERSION=master WP_MULTISITE=1
-    # WordPress 4.1
+  # WordPress 4.1
-    # @link https://github.com/WordPress/WordPress/tree/4.1-branch
+  # @link https://github.com/WordPress/WordPress/tree/4.1-branch
-    - WP_VERSION=4.1 WP_MULTISITE=0
+  - WP_VERSION=4.1 WP_MULTISITE=0
-    - WP_VERSION=4.1 WP_MULTISITE=1
+  - WP_VERSION=4.1 WP_MULTISITE=1
-    # WordPress 4.0
+  # WordPress 4.0
-    # @link https://github.com/WordPress/WordPress/tree/4.0-branch
+  # @link https://github.com/WordPress/WordPress/tree/4.0-branch
-    - WP_VERSION=4.0 WP_MULTISITE=0
+  - WP_VERSION=4.0 WP_MULTISITE=0
-    - WP_VERSION=4.0 WP_MULTISITE=1
+  - WP_VERSION=4.0 WP_MULTISITE=1
 
 # Declare 5.6 beta in test matrix.
 # @link https://buddypress.trac.wordpress.org/ticket/5620
 # @link http://docs.travis-ci.com/user/build-configuration/
 matrix:
-    include:
+  include:
-        - php: 5.6
+    - php: 5.6
-          env: WP_VERSION=master
+      env: WP_VERSION=master
-    allow_failures:
+  allow_failures:
-        - php: 5.6
+    - php: 5.6
-    fast_finish: true
+  fast_finish: true
 
 # Use this to prepare the system to install prerequisites or dependencies.
 # e.g. sudo apt-get update.
@@ -55,57 +55,57 @@ matrix:
 # e.g. copy database configurations, environment variables, etc.
 # Failures in this section will result in build status 'errored'.
 before_script:
-    # Set up WordPress installation.
+  # Set up WordPress installation.
-    - export WP_DEVELOP_DIR=/tmp/wordpress/
+  - export WP_DEVELOP_DIR=/tmp/wordpress/
-    - mkdir -p $WP_DEVELOP_DIR
+  - mkdir -p $WP_DEVELOP_DIR
-    # Use the Git mirror of WordPress.
+  # Use the Git mirror of WordPress.
-    - git clone --depth=1 --branch="$WP_VERSION" git://develop.git.wordpress.org/ $WP_DEVELOP_DIR
+  - git clone --depth=1 --branch="$WP_VERSION" git://develop.git.wordpress.org/ $WP_DEVELOP_DIR
-    # Set up theme information.
+  # Set up theme information.
-    - theme_slug=$(basename $(pwd))
+  - theme_slug=$(basename $(pwd))
-    - theme_dir=$WP_DEVELOP_DIR/src/wp-content/themes/$theme_slug
+  - theme_dir=$WP_DEVELOP_DIR/src/wp-content/themes/$theme_slug
-    - cd ..
+  - cd ..
-    - mv $theme_slug $theme_dir
+  - mv $theme_slug $theme_dir
-    # Set up WordPress configuration.
+  # Set up WordPress configuration.
-    - cd $WP_DEVELOP_DIR
+  - cd $WP_DEVELOP_DIR
-    - echo $WP_DEVELOP_DIR
+  - echo $WP_DEVELOP_DIR
-    - cp wp-tests-config-sample.php wp-tests-config.php
+  - cp wp-tests-config-sample.php wp-tests-config.php
-    - sed -i "s/youremptytestdbnamehere/wordpress_test/" wp-tests-config.php
+  - sed -i "s/youremptytestdbnamehere/wordpress_test/" wp-tests-config.php
-    - sed -i "s/yourusernamehere/root/" wp-tests-config.php
+  - sed -i "s/yourusernamehere/root/" wp-tests-config.php
-    - sed -i "s/yourpasswordhere//" wp-tests-config.php
+  - sed -i "s/yourpasswordhere//" wp-tests-config.php
-    # Create WordPress database.
+  # Create WordPress database.
-    - mysql -e 'CREATE DATABASE wordpress_test;' -uroot
+  - mysql -e 'CREATE DATABASE wordpress_test;' -uroot
-    # Install CodeSniffer for WordPress Coding Standards checks.
+  # Install CodeSniffer for WordPress Coding Standards checks.
-    - git clone https://github.com/squizlabs/PHP_CodeSniffer.git php-codesniffer
+  - git clone https://github.com/squizlabs/PHP_CodeSniffer.git php-codesniffer
-    # Install WordPress Coding Standards.
+  # Install WordPress Coding Standards.
-    - git clone https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards.git wordpress-coding-standards
+  - git clone https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards.git wordpress-coding-standards
-    # Hop into CodeSniffer directory.
+  # Hop into CodeSniffer directory.
-    - cd php-codesniffer
+  - cd php-codesniffer
-    # Set install path for WordPress Coding Standards
+  # Set install path for WordPress Coding Standards.
-    # @link https://github.com/squizlabs/PHP_CodeSniffer/blob/4237c2fc98cc838730b76ee9cee316f99286a2a7/CodeSniffer.php#L1941
+  # @link https://github.com/squizlabs/PHP_CodeSniffer/blob/4237c2fc98cc838730b76ee9cee316f99286a2a7/CodeSniffer.php#L1941
-    - scripts/phpcs --config-set installed_paths ../wordpress-coding-standards
+  - scripts/phpcs --config-set installed_paths ../wordpress-coding-standards
-    # Hop into themes directory.
+  # Hop into themes directory.
-    - cd $theme_dir
+  - cd $theme_dir
-    # After CodeSniffer install you should refresh your path.
+  # After CodeSniffer install you should refresh your path.
-    - phpenv rehash
+  - phpenv rehash
 
 # Run test script commands.
 # Default is specific to project language.
 # All commands must exit with code 0 on success. Anything else is considered failure.
 script:
-    # Search for PHP syntax errors.
+  # Search for PHP syntax errors.
-    - find . \( -name '*.php' \) -exec php -lf {} \;
+  - find . \( -name '*.php' \) -exec php -lf {} \;
-    # WordPress Coding Standards
+  # WordPress Coding Standards
-    # @link https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards
+  # @link https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards
-    # @link http://pear.php.net/package/PHP_CodeSniffer/
+  # @link http://pear.php.net/package/PHP_CodeSniffer/
-    # -p flag: Show progress of the run.
+  # -p flag: Show progress of the run.
-    # -s flag: Show sniff codes in all reports.
+  # -s flag: Show sniff codes in all reports.
-    # -v flag: Print verbose output.
+  # -v flag: Print verbose output.
-    # -n flag: Do not print warnings (shortcut for --warning-severity=0)
+  # -n flag: Do not print warnings. (shortcut for --warning-severity=0)
-    # --standard: Use WordPress as the standard.
+  # --standard: Use WordPress as the standard.
-    # --extensions: Only sniff PHP files.
+  # --extensions: Only sniff PHP files.
-    - $WP_DEVELOP_DIR/php-codesniffer/scripts/phpcs -p -s -v -n . --standard=./codesniffer.ruleset.xml --extensions=php
+  - $WP_DEVELOP_DIR/php-codesniffer/scripts/phpcs -p -s -v -n . --standard=./codesniffer.ruleset.xml --extensions=php
 
 # Receive notifications for build results.
 # @link http://docs.travis-ci.com/user/notifications/#Email-notifications
 notifications:
-    email: false
+  email: false