readme updates

[jeffpaul]

It's not obvious the level of support provided for this repo, so let's add some clarification.

• add support level section and badge
• add license file and badge

[jeffpaul]

With no license specified, I'm reluctant to add a license file and badge until we confirm the appropriate license to use.

[jeffpaul]

@timwright12 you figure MIT license for this repo?

[timwright12]

@jeffpaul I'd need to do a little more research, it might need to be the same as WP https://wordpress.org/about/license/

[jeffpaul]

@timwright12 the theme and project scaffolds are both licensed MIT, seems like mimicking that (or changing both those to GPLv2) is most logical course?