Added Post/Get to main page on server.rb/Ignore previous commit.

-Added functionality to server.rb:
1. on get to "/" append all album information
2. on post to "/" store the information to the database and redirect to main page
-Added content to index.erb:
1. Added form including image link, album name, artist, genre, and description
2. Added a table displaying the the above information.
-Changed the add method to set variables by taking in params["x"] instead of params[:x].
Merge branch 'master' of https://github.com/xoddong/songify