Clean up

Author: sled

lib/mongoid_acts_as_tree.rb

@@ -257,7 +257,7 @@ def <<(object, will_save=true)
             raise CyclicError, 'Cyclic Tree Structure'
           elsif !@parent.same_scope?(object)
             # child and parent must be within the same scope
-            raise ScopeError, 'Child must be in the same scope as parent'    
+            raise ScopeError, 'Child must be in the same scope as parent'   
           else
 
             prev_depth  = object.depth