Really. This is Hacker News and we're presumably interested in a little more depth.

There's no sense in optimizing the "start building an Android app" process in and of itself. If you ignore the time it takes to launch Eclipse (which, to be fair, runs about 45 minutes), I can start an Android app project in less than 10 seconds too, not counting the time it takes to create a github repo. The important part is what happens after the project is set up: building and maintaining your software.