I'd like to develop my own plugin but I'm having a bit of trouble getting started. The plugin I would like to create is an extension of the scala plugin, so I downloaded the source code from here https://github.com/JetBrains/intellij-scala and followed the instructions for building it.
I've managed to get it building without any problems but I can't figure out how to run it. The instructions mention running the IDEA run configuration, but I don't have any run configurations.
Also, I'd like to know how to create a stripped down version of intellij with only the plugins that I absolutely need. I've heard that it's possible to create a product on top of the intellij platform, with custom branding etc. How do I go about doing that?