Fix release version in documentation

Closes #7

Author: clauspruefer

doc/source/conf.py

@@ -60,9 +60,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = u'0.50beta'
+version = u'0.55beta'
 # The full version, including alpha/beta/rc tags.
-release = u'0.50beta'
+release = u'0.55beta'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.