Merge pull request #9 from soloara/refactor

Refactoring tasks and rename the contact to feedback,  add integaretion/controller test
Tiny refactor. remove some unneccessary codes.
Use slice partten in controllers to avoid hacking mass-assignment.
Merge pull request #10 from twers/add_strong_parameters

Add strong parameters
tiny code snippet. Qiu
update the build.sh file. Qiu
Convert tab to space
Add only options to route
fix conflict