Add travis config to deploy snapshots to sonatype.

This needs the actual sonatype username and password added
after running through a 'travis encrypt' command.

Only try to deploy from one entry in the matrix, so pulled
openjdk6 out of the main jdk matrix and added a separate
entry with its own script with the deploy command.
Add my own sonatype credentials to push snapshots
Change maven group to org.shamdata.cukes for testing sonatype deployment.

I don't have permission to push to the info.cukes group at sonatype, but
I do have permission to publish to org.shamdata, so for the purposes of
testing the publishing, I've moved the group to one that I can
publish to.
whitespace change to try to force a github webhook push to travis
another whitespace change
Yet another attempt to trigger travis to build a non-master branch
Merge branch 'travis-sonatype-snapshot-publish-org-shamdata'

Since travis doesn't seem to want to build the branch,
pull those changes into master to test out.