Bumped release version number for docs.

I think dev branch should have docs corresponding to dev branch code.

doc/conf.py

@@ -48,9 +48,9 @@ copyright = u'2011, three.js Authors'
 # built documents.
 #
 # The short X.Y version.
-version = 'r46'
+version = 'r47'
 # The full version, including alpha/beta/rc tags.
-release = 'r46'
+release = 'r47'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.