Update documentation

docs/00_Getting_Started.md

@@ -123,7 +123,7 @@ We have 4 built-in Bootstrap themes. To use one of the themes, just set the `the
 ```
 
 ###Custom Theme:
-To use a custom theme, just copy over the theme folder as well as the `.thm` file for that theme into the `themes` directory and set its value in the `theme` param in config.json
+To use a custom theme, just copy over the theme folder into the `themes` directory and set its value in the `theme` param in config.json
 
 ```json
 {