Update documentation (gruntfile and README)

Gruntfile.js

@@ -146,6 +146,9 @@ module.exports = function(grunt) {
       }
     },
 
+/**
+ * 10 :: Optimizes the images (png, jpg, gif) inside your assets/ folder.
+ */
     imagemin: {
       dynamic: {
         files: [{

README.md

-# Foundation libsass template
+# Example project to showcase some front-end optimizations.
 
-This is a template to start your own project that uses Grunt and libsass!
+Project based on the foundation framework/boilerplate.
 
 ## Requirements
 
@@ -13,17 +13,23 @@ You'll need to have the following items installed before continuing.
 ## Quickstart
 
 ```bash
-git clone git@github.com:zurb/foundation-libsass-template.git
+git clone git@git.qandisa.be:climacon/css_optim.git
+cd css_optim
 npm install && bower install
 ```
 
 While you're working on your project, run:
 
+`grunt build`
+- Builds/combines/optimizes all assets.
+`grunt critical`
+- Builds/combines/optimizes all assets, compiles the index.php file into HTML and inlines the critical CSS.
 `grunt`
+- Runs the build task + watches your files for changes (SASS, images, JS...).
 
 And you're set!
 
 ## Directory Structure
 
   * `scss/_settings.scss`: Foundation configuration settings go in here
-  * `scss/app.scss`: Application styles go here
+  * `scss/_custom.scss`:   Application styles go here