add test for controller
add test for controller

cfree/angularjs-for-test-driven-development,StevenPerez/angularjs-for-test-driven-development,rmulder/angularjs-for-test-driven-development,rmulder/angularjs-for-test-driven-development,tutsplus/angularjs-for-test-driven-development,cfree/angularjs-for-test-driven-development,StevenPerez/angularjs-for-test-driven-development,tutsplus/angularjs-for-test-driven-development