Restructure docs and move mkdocs.yml to top-level

Makefile

@@ -37,6 +37,9 @@ restore:
 env:
 	@godep go env
 
+docs-deploy:
+	@mkdocs gh-deploy --clean
+
 clean:
 	@echo "Cleaning up all the generated files"
 	@rm -fv pkg/utils/split/TESTPREFIX.*