Update mocha dependency
Update mocha dependency

thehobbit85/generator-node,rhettl/generator-node,morgante/generator-nodepack,joeybaker/generator-iojs,liuxiong332/generator-node-gulp-coffee,stevemao/generator-node,zckrs/generator-node,iamstarkov/generator-node,youngmountain/generator-node-gulp,davewasmer/generator-node,joeybaker/generator-iojs,yeoman/generator-node,amitport/generator-node,RobertJGabriel/generator-node,ksheedlo/generator-node-mocha-jscs,canercandan/generator-node