Closes #245

All promise syntax has been replaced with async/await.
`renovate` is now transpiled with `babel` to a `dist/` folder, which is the target of `main` and `start` in `package.json` now.
`renovate` can be run in `node.js` v7 without transpilation using `npm run start-raw`

Closes #77 

Closes #69

Closes #55

commit 4914c5bbf401711b61d9a54330532175a51a167c
Author: Rhys Arkins <rhys@keylocation.sg>
Date:   Tue Jan 17 12:45:45 2017 +0100

    Update debug

commit 55c8307381397399afda01038b6c50416cba27a3
Author: Rhys Arkins <rhys@keylocation.sg>
Date:   Tue Jan 17 12:44:08 2017 +0100

    Ignore versions newer than “latest”

commit 8aa3e7daa937c0d86f89e1d704853ebee46a54a8
Author: Rhys Arkins <rhys@keylocation.sg>
Date:   Tue Jan 17 11:17:31 2017 +0100

    Ignore futures if current is not future

Also deprecates RENOVATE_TOKEN for GITHUB_TOKEN