Config cluster ref fix

.gitignore

@@ -1,6 +1,7 @@
 ext/*.pyc
 ext/__pycache__/
 build/
+venv
 *~
 *.swp
 *.bak

README.md

@@ -10,7 +10,9 @@ You can view the latest rendered build of this content at:
 Install Python 2.7+ and pip. Then:
 
 ```sh
-$ sudo pip install Sphinx sphinx_rtd_theme
+$ virtualenv venv
+$ . ./venv/bin/activate
+$ pip install -r requirements.txt
 $ make html # builds the docs
 $ make check # syntax checks the docs
 ```

src/config/cluster.rst

@@ -40,7 +40,7 @@ Cluster Options
     creation time.
 
     .. seealso::
-        httpdomain:put:`PUT /{db} </{db}>`
+        :http:put:`PUT /{db} </{db}>`
 
     .. config:option:: n