Update readme

readme.md

@@ -3,11 +3,10 @@
 On a web project, run the following commands to install Essence:
 
 ```shell
-git submodule add path/to/repo/of/essence
-git mv essence resources/essence
+git submodule add https://git.insterprise.com/leo/essence.git resources/essence
 ```
 
-Import Essence from your SASS file:
+Import Essence from your main SASS file such a `app.scss`:
 
 ```scss
 @import 'path/to/essence';