Updated npm dependencies (see below for details)

grunt 0.4.1 --> 0.4.2
grunt-cli 0.1.9 --> 0.1.11
grunt-contrib-jshint 0.6.4 --> 0.8.0
grunt-contrib-nodeunit 0.2.0 --> 0.2.2
jake 0.7.2 --> 0.7.6
jshint 2.1.11 --> 2.4.1
karma 0.10.2 --> 0.10.9
karma-mocha 0.1.0 --> 0.1.1
mocha 1.13.0 --> 1.17.0
nodeunit 0.8.1 --> 0.8.2