Download button appears on Classroom page
  *Added download partial
  *Added partial display helper on classroom template
TODO:
  *Add controller method to catch download action
Added development dependencies
  * added filesaver.js and jszip.js in libs
  * loaded them in index.html
Classroom Controller has save functionality as download action
  *Loaded dependency scripts in index
TODO
  *Implement asZipDirectory on App.Classroom
Successfully saves a recursively generated zip file
  *The zip file repeatedly nests the root directy. Why?
  *All layers of folders are nested within one another. How do we get breadth as well as depth?
The file structure contained in current-classroom is downloaded as a structured zip file when the download button is pressed
  *Like, wow!
TODO:
  *Merge master, test, and pull request
Download button is inside the folder navbar
Download comes with a cumulative notes file
  *Currently, the file names are in endpoints rather than the full path
Merge pull request #24 from pocket-gophers-2014/cumulative_notes

Download Folders with Cumulative notes
Added download button and features from master

Conflicts:
	index.html