How to use grunt changelog?

I’m trying to use grunt-conventional-changelog to automatically generate a CHANGELOG.md.
I tagged my release like this:

>git tag -a v0.0.1 -m "Iteartion 0 release, v0.0.1"

How should I commit my changes so that grunt includes Features, Build, Bugfixes?

Git Baby is a git and github fan, let's start git clone.