update travis config
fix strict error
Merge pull request #23 from ceeram/cake3-travis

update travis config
Merge pull request #24 from ceeram/cake3-strict

fix strict error
fix tests for postgres
Merge branch 'cake3' of github.com:FriendsOfCake/Authenticate into cake3
change composer installs to prefer-dist in travis
remove ignore on test folder in travis config for phpcs
Several changes to travis setup

- Remove hhvm from the builds
- No longer allow phpcs to fail
- Allow failures on coveralls
Slim down travis build matrix.
Change forward slash to backslash as per core changes.
Revert backlash to forward slash in plugin name.
Update composer config to install plugin under FOC/Authenticate.
Merge pull request #27 from FriendsOfCake/cake3-composer

Update composer config to install plugin under FOC/Authenticate.
Update composer.json