next dev. iteration
use IF NOT EXISTS to ease test DB setup
wip: update dwca-reader, OccurrenceExtensionModel
Merge pull request #1 from Canadensys/dev

Update dwca-reader, OccurrenceExtensionModel
merged back with master
trying Git cherry-pick
fixed pk name
improve OccurrenceExtensionDAO
Merge pull request #5 from Canadensys/testliger

bring back canadensys-data-access changes
awsome!
fixed https://github.com/WingLongitude/liger-data-access/issues/6
Merge pull request #7 from Canadensys/liger_issue6

Fixed issue #6
#2 merged head content from dev branch and fixed conflicts