Added in executor execution of predicate script
simplify test
Merge remote-tracking branch 'upstream/master' into dev
Improved unit test
refactored existing script execute unit test
Changed the license to MIT
Merge pull request #64 from MehdiK/license

Changed the license to MIT
Merge pull request #48 from Gwayaboy/dev

enriched IExecutor with ability to execute a predicate script for a given amount of time for example asses whether all ajax calls are completed