sh code highlighing

Author: IonicaBizau

README.md

@@ -39,7 +39,7 @@ You can change the duration of your animations, add a delay or change the number
 ## Custom Builds
 Animate.css is powered by [Grunt](http://gruntjs.com), and you can create custom builds pretty easily. First of all, you’ll need Grunt and all other dependencies:
 
-```
+```sh
 $ cd path/to/animate.css/
 $ sudo npm install
 ```
@@ -62,4 +62,4 @@ Next, run `grunt watch` to watch for changes and compile your custom builds. For
 Animate.css is licensed under the MIT license. (http://opensource.org/licenses/MIT)
 
 ## Contributing
-Pull requests are the way to go here. I apologise in advance for the slow action on pull requests and issues. I only have two rules for submitting a pull request: match the naming convention (camelCase, categorised [fades, bounces, etc]) and let us see a demo of submitted animations in a [pen](http://codepen.io). That last one is important.
+Pull requests are the way to go here. I apologise in advance for the slow action on pull requests and issues. I only have two rules for submitting a pull request: match the naming convention (camelCase, categorised [fades, bounces, etc]) and let us see a demo of submitted animations in a [pen](http://codepen.io). That last one is important.