Dead links in readme

[MHLoppy]

The following links in the readme are dead:

• LICENSE (bottom of page, should go to https://github.com/gitcoinco/kudosbadges/blob/master/LICENSE instead)
• Kudos design guide (under "to create a new Kudos" - link is completely gone with no obvious replacement)

In particular, other places reference the design guide so it seems important to have it available.

[Dev79844]

I would like to work on this.