Add README.md file

Loved your YouTube tutorial, thank you! It was so helpful to see you go through how to resolve a merge conflict & work through the bumps. :dancers: 

I created a readme.md file to add the link to the video and other resources. Also, if you create a gh-page branch 

![screen shot 2014-11-08 at 10 50 21 pm](https://cloud.githubusercontent.com/assets/2623954/4966698/cc90db9c-67dc-11e4-8038-670b7de320be.png)

you will be able to see the index.html file hosted using GitHub pages at randletdbrowning.github.io/student-sites. :tada: (see my example @ http://alysonla.github.io/student-sites/)  

thanks again!