Documentation: Add CONTRIBUTING badge to repo

[ruebot]

http://img.shields.io/badge/CONTRIBUTING-Guidelines-blue.svg

For example, we will use:
[![Contribution Guidelines](http://img.shields.io/badge/CONTRIBUTING-Guidelines-blue.svg)](./CONTRIBUTING.md)

... which yields ...

Repositories:

• [x] https://github.com/Islandora-CLAW/pdx
• [x] https://github.com/Islandora-CLAW/chullo/
• [x] https://github.com/Islandora-CLAW/claw-docker
• [x] https://github.com/Islandora-CLAW/claw-docker-islandora-karaf-components
• [x] https://github.com/Islandora-CLAW/claw-docker-fedora
• [x] https://github.com/Islandora-CLAW/claw-docker-blazegraph
• [x] https://github.com/Islandora-CLAW/claw-docker-maven
• [x] https://github.com/Islandora-CLAW/claw-docker-solr
• [x] https://github.com/Islandora-CLAW/claw-docker-tomcat
• [x] https://github.com/Islandora-CLAW/claw-docker-karaf
• [x] https://github.com/Islandora-CLAW/claw-docker-all-in-one
• [x] https://github.com/Islandora-CLAW/claw-ansible
• [x] https://github.com/Islandora-CLAW/claw-docker-oracle-jdk
• [x] https://github.com/Islandora-CLAW/claw-docker-open-jdk
• [x] https://github.com/Islandora-CLAW/claw-docker-mariadb
• [x] https://github.com/Islandora-CLAW/claw-docker-islandora
• [x] https://github.com/Islandora-CLAW/claw-docker-drupal
• [x] https://github.com/Islandora-CLAW/claw-docker-base
• [x] https://github.com/Islandora-CLAW/islandora
• [x] https://github.com/Islandora-CLAW/Alpaca

[ruebot]

Partially addressed with: https://github.com/Islandora-CLAW/pdx/commit/26321e26fdd788a1b06db9cbf8af5f75f859f5d2

[ruebot]

Addressed with:

• https://github.com/Islandora-CLAW/chullo/commit/9f0a27f795cb4d197df077c9e7bb842a67e08bdc
• https://github.com/Islandora-CLAW/Alpaca/commit/bb422907d121fd2a3e7711511874093b74070a9d
• https://github.com/Islandora-CLAW/islandora/commit/c0b17de1cb8e84ff35b4174d9050e51dcc7615cb
• https://github.com/Islandora-CLAW/claw-docker-fedora/commit/3538fe6955eafe395a9cad91e5ab9828dfd49c10
• https://github.com/Islandora-CLAW/claw-ansible/commit/4072dc273a0b6e29dee3382f87dd23704b08fbf2
• https://github.com/Islandora-CLAW/claw-docker-all-in-one/commit/918097126ebde2dd8cf243c0849e5311c9b62db5
• https://github.com/Islandora-CLAW/claw-docker-oracle-jdk/commit/3192d9ea5f713fdc55b0ab85e0a5511887381dce
• https://github.com/Islandora-CLAW/claw-docker-base/commit/bb78f8a44469e4665f1beb969cf6ef7ebbb90f3f
• https://github.com/Islandora-CLAW/claw-docker-drupal/commit/1d9e10cf6725fd6ab2349b7c53bb1c799bc8ee5e
• https://github.com/Islandora-CLAW/claw-docker-mariadb/commit/b788b437e1788228cfc0b5be57dba2fd9d4afa58
• https://github.com/Islandora-CLAW/claw-docker-islandora/commit/3156200e9d5b11631b6dd7badc9ee78685628639
• https://github.com/Islandora-CLAW/claw-docker-islandora-karaf-components/commit/6265643dde5b4dcee423d4717a31eb4fcaca9f66
• https://github.com/Islandora-CLAW/claw-docker-karaf/commit/6790da1379fcd27cdb14f27c5835a3bd0931514e
• https://github.com/Islandora-CLAW/claw-docker-maven/commit/d5b7e7dda3d2f06a08ebaac556d61aade45bf6a3
• https://github.com/Islandora-CLAW/claw-docker-solr/commit/89052cddc0cb1e9505dae21066e756f59860980a
• https://github.com/Islandora-CLAW/claw-docker-tomcat/commit/e7809061f855fc6960fc275f237d1c0906d1fda1
• https://github.com/Islandora-CLAW/claw-docker-blazegraph/commit/52e00220745c767045a8bcc06e29aa1a8dda4554
• https://github.com/Islandora-CLAW/claw-docker/commit/ed74dd2c446a6f93b1396f0ce46f5e7ecf0d3e38

[sowla]

@ruebot, sorry if I'm creating more work for you! Is there a way to edit all the files then create a single pull request?

[ruebot]

@sowla nah, you're all good. Since everything is in separate repos, it'll be a pull request for each repo.

[ruebot]

All done. Thank you very much @sowla!

[sowla]

You're very welcome :) Thank you too @ruebot for your patience with my newbie mistakes! :)

[manez]

@sowla this is great! We're always glad to see new contributors, and man did you hit the ground running 😃

[sowla]

Thank you @manez! :) I started learning to code about two weeks ago, so there are very very few projects I can contribute to.. I was very excited to see this issue! ;P

[ruebot]

https://github.com/Islandora-CLAW/Crayfish/pull/11

[whikloj]

Fully resolved with https://github.com/Islandora-CLAW/Crayfish/commit/22e0c0efbad016a5e683b470fbe9629fe06a60b3