vagrant@precise64:/vagrant$ grunt serve
>> Local Npm module "grunt-autoprefixer" not found. Is it installed?
>> Local Npm module "grunt-concurrent" not found. Is it installed?
>> Local Npm module "grunt-contrib-clean" not found. Is it installed?
>> Local Npm module "grunt-contrib-compass" not found. Is it installed?
>> Local Npm module "grunt-contrib-concat" not found. Is it installed?
>> Local Npm module "grunt-contrib-connect" not found. Is it installed?
>> Local Npm module "grunt-contrib-copy" not found. Is it installed?
>> Local Npm module "grunt-contrib-cssmin" not found. Is it installed?
>> Local Npm module "grunt-contrib-htmlmin" not found. Is it installed?
>> Local Npm module "grunt-contrib-imagemin" not found. Is it installed?
>> Local Npm module "grunt-contrib-jshint" not found. Is it installed?
>> Local Npm module "grunt-contrib-uglify" not found. Is it installed?
>> Local Npm module "grunt-contrib-watch" not found. Is it installed?
>> Local Npm module "grunt-filerev" not found. Is it installed?
>> Local Npm module "grunt-google-cdn" not found. Is it installed?
>> Local Npm module "grunt-include-source" not found. Is it installed?
>> Local Npm module "grunt-karma" not found. Is it installed?
>> Local Npm module "grunt-newer" not found. Is it installed?
>> Local Npm module "grunt-ng-annotate" not found. Is it installed?
>> Local Npm module "grunt-recess" not found. Is it installed?
>> Local Npm module "grunt-replace" not found. Is it installed?
>> Local Npm module "grunt-svgmin" not found. Is it installed?
>> Local Npm module "grunt-usemin" not found. Is it installed?
>> Local Npm module "grunt-wiredep" not found. Is it installed?
>> Local Npm module "grunt-include-source" not found. Is it installed?
Loading "Gruntfile.js" tasks...ERROR
>> Error: Cannot find module 'time-grunt'
Warning: Task "serve" not found. Use --force to continue.

Aborted due to warnings.