Support watching and landing multiple projects.

- Update the INI docs with examples of listing multiple projects
- Add checks for parsing those and verifying they're sane.
- Add new job-name to the landing job so that we can identify which projects
we're landing.

Add tests for the config building

lint
Add a index page to list projects being watched
Merge pull request #9 from mitechie/multi-projects

- Update the INI docs with examples of listing multiple projects
- Add checks for parsing those and verifying they're sane.
- Add new job-name to the landing job so that we can identify which projects
we're landing.