Add Indigo branch.

[talregev]

I modified the project that will compile to the new version of ros - indigo.
please add a branch name indigo, that it will be identical to groovy branch,
and i will pull request my modification.
thanks for this software.

[jspricke]

Hi @talregev,

can you push the indigo branch somewhere? I would like to submit it to F-Droid.

[davidbsp]

@jspricke, not only did he not push it, but @talregev also deleted his git repo, and is now asking money for the app in the play store for this app. Ridiculous!

[130s]

As of today the package is under Apache 2.0 license so there's no problem in commercializing the derivative (INAL). Although I kind of know how you feel, I think it's unfair to blame someone who's conforming to OSS rule and making money out of it.