next-updater has upgraded 15 dependencies

Hi!

I have upgraded dependencies to the latest non-breaking versions

    js-beautify -> 1.5.4
    grunt -> 0.4.5
    grunt-banner -> 0.2.3
    grunt-contrib-concat -> 0.5.0
    grunt-contrib-copy -> 0.7.0
    grunt-contrib-jshint -> 0.10.0
    grunt-contrib-uglify -> 0.7.0
    grunt-deps-ok -> 0.5.2
    grunt-nice-package -> 0.3.0
    grunt-npm2bower-sync -> 0.4.0
    jshint-stylish -> 1.0.0
    mocha -> 2.1.0
    pre-git -> 0.1.1
    sinon -> 1.12.2
    time-grunt -> 1.0.0

Truly yours, [next-updater](https://github.com/bahmutov/next-updater)