turn my bintray tasks into a plugin

[tbarker9]

So I have been meaning to turn my bintray gradle tasks here into a plugin. It is pretty hacky right now, but it works. If you are serious about writing this, I could try to construct the upload part of your plugin and send a pull request. Otherwise I will just create my own. There is also a bintray gradle plugin on bitbucket here. That plugin seemed more concerned with basic GET interaction with bintray. I don't think anything exists for publishing.

[tbarker9]

I talked to author of the gradle bintray plugin on bitbucket. I think he will move his work over to github in the next couple of days. I will probably contribute to that instead since he has some code available.