diff --git a/README.md b/README.md
index 4ce3f2e..3fd121c 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,8 @@
-**TODO** - currently the block name is hardcoded to `svg` and theme is `room-vw`.
-Need to use templating to create a `<block-name>.php` file (based on `svg.php)`
-with the correct theme/block names.
-
-
 ## Usage
 
+Edit `index.php` and `.scss` files, so that the correct block name and
+namespace are used.
+
 ```sh
 npm install
 
diff --git a/index.php b/index.php
index 2440b1c..32f957e 100644
--- a/index.php
+++ b/index.php
@@ -1,7 +1,8 @@
 <?php
+define( 'BLOCK_NAMESPACE', '<<INSERT BLOCK NAMESPACE HERE>>' )
+
+$block_namespace = BLOCK_NAMESPACE;
 $block_slug = basename( dirname( __FILE__ ) );
-// TODO calculate this correctly whether this file is within a theme or plugin
-$block_namespace = get_option( 'stylesheet' );
 
 add_action( 'init', function() {
 	global $block_slug, $block_namespace;