Fix import of version into docs

docs/conf.py

@@ -21,7 +21,6 @@ import sys
 import bilby
 sys.path.insert(0, os.path.abspath('../bilby/'))
 
-
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
@@ -55,10 +54,13 @@ author = u'Paul Lasky'
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
+fullversion = bilby.__version__.split(':')[0]
+
 # The short X.Y version.
-version = bilby.__version__
+version = '.'.join(fullversion.split('.')[:2])
+
 # The full version, including alpha/beta/rc tags.
-release = bilby.__version__
+release = fullversion
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.