docs: update README

Author: JuliaUsanova

README.md

@@ -1,8 +1,18 @@
 # Light Blue - HTML5 Version
 
 ### Quick Start
+Go to project's root directory `~/path/to/project` and run the following:
 ```
 $ npm install
 $ bower install
+```
+
+If you don't have `grunt-cli` installed globally:
+```
+$ npm install -g grunt-cli
+```
+
+When `grunt-cli` is installed, compile the project:
+```
 $ grunt
 ```