Added Diagrams

[jonschwenn]

• Added Diagrams for Lab, DOLB, HAPROXY, and WordPress Cluster deployments #23
• Removed /docs folder to move github pages to master branch README
• Fixed link to example code for do.co/navguide githubpages use
• Fixed #48

[jonschwenn]

Note, due to the way we do image links, we can't test prior to merging to master. This is a small update. Pushing the merge forward w/o review.