don't run selecta with
add slugify to bin
format slugify script code
don't generate unnecessary output in run-command-on-git-revisions

When doing the `reset --hard` it would output something like "HEAD is
now at as2zv22" which would interfer with other scripts.
Merge pull request #26 from davidpdrsn/master

Don't generate unnecessary output in run-command-on-git-revisions
Merge pull request #2 from garybernhardt/master

Merge upstream changes