New Bundling page

New Bundling page based on testing with 2.0.10 and comments from @am11 on [madskristensen/WebEssentials2013#950](https://github.com/madskristensen/WebEssentials2013/issues/950) and [madskristensen/WebEssentials2013#995](https://github.com/madskristensen/WebEssentials2013/pull/995). 

I published a temporary version of the web page [here](http://testbundlingwe.azurewebsites.net/features/bundling) to facilitate the review. This site will be erase after the PR approbation.