Reference specific languages plugin in readme

[coolya]

I think we should include a section in to the readme that links to the specificlanguages/mps-gradle-plugin.

I think for many use cases, especially those that don't require running the model check and other customisation it provides a much better user experience. It reliance on convention over configuration makes it much more beginner friendly.
I think 80% of the uses that are currently done with the mbeddr plugin could easily be achieve with the specificlanguages plugin. We should at least point potential users to it before they commit to using this plugin.

In my recent MPS side projects I defaulted to the specificlanguages and in most cases it was easier to use, less build script code to write and allowed me to get my project working in less time.

@sergej-koscejev what do you think does it make sense to refer to your plugin from this plugins readme?

[sergej-koscejev]

I have no objections, of course :)