Docs: add deploy release section
Update bump and release tasks to be separate

Further modify bump task to take a type argument as now the task is
meant to be used through CLI directly. Add bower.json to bump file
list. Have tag task run build instead.
Bump version to 0.2.0
Replace gulp git with command line calls

Having a lot of trouble with gulp-git tag method. No need for it as we
can just execute the necessary commands manually.