Add config option to open links in new windows.

[thomastweets]

No description provided.

[sofish]

doc and testcase?

[thomastweets]

Thanks for the reply. I added some short documentation to the readme. If you want more extensive documentation in a separate paragraph, I can do that, too. However, as many config options do not have such documentation, I left it out for now.

Regarding test cases: I do not see any automated tests set up for your project (other than jshint and uglify checks). Maybe I oversaw them? Could you describe what you would like me to add here?

Thanks!