[library] Improved documentation

And fixed unused imports

beat/backend/python/library.py

@@ -26,10 +26,15 @@
 ###############################################################################
 
 
-"""Validation for libraries"""
+"""
+=======
+library
+=======
+
+Validation for libraries
+"""
 
 import os
-import six
 import simplejson
 
 from . import loader
@@ -201,8 +206,8 @@ class Library(object):
 
     @property
     def name(self):
-        """Returns the name of this object
-        """
+        """Returns the name of this object"""
+
         return self._name or '__unnamed_library__'