Upload plugin to conda-forge

[Czaki]

We should provide conda-forge version of this plugin

[jni]

Indeed! Thanks @Czaki. I'd like to get #111 merged and then we can make a release and make the PR to conda-forge/staged-recipes.

[jni]

Hmm, I think this would need RtMidi and python-rtmidi on conda-forge first...

[Czaki]

ouch