build(npm): update chokidar and karma* dependencies

These dependencies required upgrade in order for us to run on Node v4.x

chokidar 1.0.1 -> 1.1.0
karma 0.12.23 -> 0.13.10
karma-chorome-launcher 0.1.8 -> 0.2.0
karma-cli 0.0.4 -> 0.1.0
karma-dart 0.2.8 -> 0.3.0
karma-sauce-launcher 0.2.11 -> 0.2.14

Author: IgorMinar