avoid shadowing of reserved set keyword
allow filtering files to upload by IPTC keyword
use proper name for iptcinfo dependency
Merge pull request #24 from ricardokirkner/master

allow filtering files to upload by IPTC keyword
flickrapi update and keyword empty fix
corrected version number
fixed browserless auth
Refactor of code into Local, Remote and Sync classes.
Added tests for local and remote.
No new additional functionality
Added test for sync upload, download to follow...