nebula device 2

After I got Nebula 2 building on Ubuntu Edgy, I figured I’d update the documentation just in case I have to do everything from scratch again. That’s when I realised the Getting Started documentation is way out of date (and not just the Linux section). So I’ve now updated it to reflect current procedures on all “supported” platforms. Further updates are likely to follow in the near future as I attempt to build Mangalore on Windows and Ubuntu Edgy.