[WFA] Added better automated test support

Added three enhancements to the test experience:

* Colored red/green tests
* Zeus for faster rails environment preload (do 'zeus start' in terminal and then test with 'zeus test test' I recommend to create an alias as 'zeus-test' or 'zt' 
* Guard for automating test process, when a test change, the test is executed and also the test suite (requires zeus running in a different terminal) for execute it run 'guard'