Scala 2.10.3

  - Update the build to use Scala 2.10.2
  - Add a convenience to trigger the release notes:

    scala> MakeReleaseNotes("/code/scala", "v2.10.2", "v2.10.3")
    Generated: release-notes.html
    Generated: release-notes-v2.10.3.md

  - s/RC3/ in the hand written release notes
Add bootstrap CSS.

The fall of the Times-New-Roman Empire.
Ignore the generated markdown files.

We don't commit this back to the repo, as we do for
the HTML.
Merge pull request #32 from retronym/release/2.10.3

Release/2.10.3