Add tau-utils and tau-switcher module

DESC: F
Add gitignore

DESC: F
Addd test for tau-utils and tau-switcher

DESC: F
Add package and coverage folder in gitignore

DESC: C
Move main js from tau to angular-tau-utils

DESC: C
Change package name from tau-utils to angular-tau-utils

DESC: C
Add grunt, karma, bower and npm config

DESC: A