Merge pull request #1 from movimento-sem-terra/small-improvements

Small Improvements
removes unused instance var
one assertion per scenario - accomplished
I was confuse about the authentication infomation, so I added two comments
Adds content-type to the allowed headers
Add debugging variable
#53 Google Drive API integration
#53 Ignore key file.
#53 Retrieving uploaded files
#53 Giving permission to uploaded files
#53 add filename and refactor app.rb
#53 remove key file
#53 add key file
#53 fix breaking test
#53 dummy commit
#53 refactoring
#53 Added files listing
#53 Returning the download link for uploaded files
#53 Added files listing page
Adding sinatra contrib to app