Adds Procfile
Merge branch 'master' of github.com:ericthelast/angular-uploadcare

# By kevinsproles
# Via Eric C. Brown (1) and kevinsproles (1)
* 'master' of github.com:ericthelast/angular-uploadcare:
  Fixed to work with angular v1.2.x
Minor enhancements & fixes for the directive. Updates README with better documentation.