Merge pull request #2446 from pjackson28/v4.0

Updated i18n files with latest strings
Add Travis-CI config

- Tests on 0.8 and 0.10 to cover the likely versions developers might
use in WET
Merge pull request #2448 from nschonni/add-travis-v4

Add Travis-CI config
Converted Gruntfile.js leading spaces to tabs and corrected License file URLs.