Added --start-maximized option for MS WIN "hidden windows" issue

This commit adds a command line option which should prevent chrome from opening in a hidden window as described in http://code.google.com/p/chromium/issues/detail?id=151836 .
grunt-cli also needs to be install globally
Merge pull request #277 from hmalphettes/docs-grunt-cli-install

[docs] grunt-cli also needs to be install globally
[docs] Remove jamsine in contributing.
[docs] Remove testacular dependency in contributing.
[fix] Update chokidar to 0.5.1. Fixes #265
Merge pull request #275 from KevinOrtman/master

Added --start-maximized option for MS WIN "hidden windows" issue