Move gh-pages branch files into /docs and add test files

- Jekyll ignore `/docs` and `/test` folders when using from root
- Update Staticman config to point to correct branch and data file location
- Replace `{{ base_path }}` references with `absolute_url` filter
- Update documentation

docs/_data/authors.yml

@@ -0,0 +1,18 @@
+# Authors
+
+Billy Rick:
+  name        : "Billy Rick"
+  uri         : "http://thewhip.com"
+  email       : "billy@rick.com"
+  bio         : "What do you want, jewels? I am a very extravagant man."
+  avatar      : "/assets/images/bio-photo-2.jpg"
+  twitter     : "extravagantman"
+  google_plus : "BillyRick"
+
+Cornelius Fiddlebone:
+  name        : "Cornelius Fiddlebone"
+  email       : "cornelius@thewhip.com"
+  bio         : "I ordered what?"
+  avatar      : "/assets/images/bio-photo.jpg"
+  twitter     : "rhymeswithsackit"
+  google_plus : "CorneliusFiddlebone"