Use new mainClass property instead of main

[donv]

This should remove the deprecation warning and fix #427 .

[donv]

Any chance of getting this merged?

[boris-petrov]

cc @ysb33r

[PseudoDistant]

Just how ded is this project?
Jeez...

[PseudoDistant]

@donv sorry for bothering you, but you seem to be literally the only person doing work on this plugin, and I suck at Gradle.
#432
Do you know what can be done about this?

[donv]

I am only a contributor. We use this plugin in our projects, and it is important to us, but we have no commit rights.

[UweKubosch]

@rtyler @ysb33r @mkristian Any chance of getting this merged?

[mkristian]

@rtyler @ysb33r I merged it as it looks sane and apparently it fixes the problem. but I can not release and deploy the whole thing, I really need you to do it.