Using AngularJS + UnderscoreJS

If anyone is wondering why people use a factory here to inject it. This stackoverflow comment sums it up nicely

     Probably for the same reasons you inject anything, 
     instead of putting everything in the global scope. 
     However, since you're a lot less likely to want to
     substitute out your underscore library during testing
     than some other more specific dependency it's
     understandable that it doesn't seem necessary. – fess 

http://stackoverflow.com/questions/14968297/use-underscore-i...

We use Underscore with Angular using this tool: https://github.com/obibring/grunt-angular-service

An example of how is in the README.