Merge pull request #73 from FilipeMaia/is_unified_fix

Use the correct unified backend name

Author: pavanky

arrayfire/library.py

@@ -507,7 +507,7 @@ def name(self):
         return self.__name
 
     def is_unified(self):
-        return self.__name == ''
+        return self.__name == 'unified'
 
     def parse(self, res):
         lst = []