Added connectors

Added Google Drive, PayPal and SugarCRM connectors
Revert "Added connectors"

This reverts commit 79c3a2e387a229c477f272e779a49dafb6331e69.
Merge remote-tracking branch 'upstream/master'
Added PayPal connector

Added PayPal connector source code
Added SugarCRM connector

Added SugarCRM connector source code
Added AmazonS3 connector

Added AmazonS3 connector source code
Added Google Drive connector

Added Google Drive connector source code
Added LinkedIn connector

Added LinkedIn connector source code
Merge remote-tracking branch 'upstream/master'
Fixed some issues in SugarCRM connector
Fixed some issues in PayPal connector
Fixed some issues in LinkedIn conector
Fixed some issues in GoogleDrive connector
Fixed some issues in AmazonS3 connector
Removed unnecessary java files in LinkedIn connector
Merge pull request #2 from Chanaka/master

Added PayPal connector