Update README shield links. Address #3. (#4)
Update README shield links. Address #3. (#4)

* Update README shield links. Address #3.

* Update Development section of README, and add myself as maintainer.

* Various README updates.

* Various README updates.

* Correct ImageLayers badge

* Remove two shields.

Islandora-CLAW/claw-docker-all-in-one,Islandora-CLAW/claw-docker-all-in-one