Fix up .gitignore

[gaand]

Remove/comment out .rspec and bower.json

@jrhorn424 I hope we can revisit the comprehensive .gitignore. I'm starting to think it would be better to be more targeted.

[raq929]

@jrhorn424 was this addressed in 229948c?

[jrhorn424]

Yes it was. @gaand Does that commit align with your intent?

[gaand]

I believe it does.