Fix for using rigger with atom

[denar90]

Hi. I'm using rigger in my Atom package. I'm getting error like Refused to evaluate a string as JavaScript because 'unsafe-eval'.... when rigger uses _.template() method to build template.
Here solution which I found and implemented in this pr.

[DamonOehlman]

@denar90 thanks for the PR. I might even take a look at removing underscore templates all together as I'm really just doing a fairly simple string replacement, that could probably be handled by something much simpler.

Are you able to build your atom package using your modified version? You should be able to reference your github package as a dev dependency until we get a resolution.

[denar90]

Yes, I'll do it this. Should I close this PR?

[DamonOehlman]

I'd say leave it open until I get the alternative implementation done.