Over the last couple of days i've worked on getting Polycode's lua syntax highlight to work with sublime text 3. In addition to that, I'm also working on getting functional code completion, and although it is still WIP, it's usable. I've also added a build and run system and a template for .polyproject.
As much as I love the PolyCode's IDE, it's nice to just being able to boot sublime text and start coding.
In case you want to try it, you can get it from my repo: https://github.com/CandyFace/LuaPolyCode
It's only been tested on OSX, so if you experience issues, that may be the reason :3