fixes #21: one can now specify a single commit instead of before/after

[silkentrance]

Tested this and it works just fine, after a little while ,/

Added Gruntfile.js/changelog/initial_commit pointing to the initial commit for quick testing purposes.

[mischah]

Mhmm. I don’t see a need for this.
It’s already possible to use tags instead of dates. See https://github.com/micromata/generator-bootstrap-kickstart/blob/master/Gruntfile.js#L60 for example.

And I do not see a benefit of referring to a single commit. Just tag your initial commit with v 0.0.0 and you’re good to go 😗

@ericmatthys Agree?

[silkentrance]

Never thought about tagging an empty repository, but it is a viable solution.