FIX: 3.1 strict API updates
BUGFIX: Issue #41 Deprecated control
Merge pull request #48 from rkupper/41-deprecated-control

Deprecated control statements (Fixes Issue #41)
FIX: Fixed composer.json
3.1 private static updates.
Defining $allowed_actions (required for 3.1)
Transifex translation support
Declare cms dependency
Cleanup of README, and removal of irrelevant information.
Updating README to reflect required SilverStripe version.
Merge