Add Kaleidoscope Diff action.
Merge pull request #11 from bobthecow/feature/kaleidoscope

Add Kaleidoscope Diff action.
Merge branch 'upstream_master'
Google Drive action

Uploads files to Google Drive.
* It displays a dialog for each upload to select the desired folder or create a new one.
* It remembers selection, so for each upload it will preselect the previously selected/created folder.
* Handles authentication and stores the neccessary data in a file in the action folder (used the sample provided by google for their api)