Update mocha to 2.2
Update mocha to 2.2

usm4n/cyclejs,cyclejs/cyclejs,feliciousx-open-source/cyclejs,staltz/cycle,maskinoshita/cyclejs,maskinoshita/cyclejs,usm4n/cyclejs,feliciousx-open-source/cyclejs,cyclejs/cycle-core,maskinoshita/cyclejs,ntilwalli/cyclejs,usm4n/cyclejs,ntilwalli/cyclejs,ntilwalli/cyclejs,cyclejs/cyclejs,cyclejs/cyclejs,cyclejs/cycle-core,usm4n/cyclejs,cyclejs/cyclejs,ntilwalli/cyclejs,staltz/cycle,feliciousx-open-source/cyclejs,maskinoshita/cyclejs,feliciousx-open-source/cyclejs