Updates grunt-contrib-watch devDependency to latest stable version
Updates grunt-contrib-watch devDependency to latest stable version

logankoester/grunt-phonegap,adriancmiranda/grunt-cordova,streamlinesocial/grunt-phonegap,zipscene/grunt-phonegap,simonoff/grunt-phonegap,standup75/grunt-phonegap,johnhornsby/grunt-phonegap,optikalefx/grunt-phonegap