Merge pull request #90 from asottile/put_back_bytes_test

Restore bytes test for warnings removed in c54f786

Author: dahlia

sasstests.py

@@ -854,6 +854,10 @@ def test_sass_warning_no_conversion(self):
         warn = sass.SassWarning(u'error msg')
         assert type(warn.msg) is text_type, type(warn.msg)
 
+    def test_sass_warning_no_conversion_bytes_message(self):
+        warn = sass.SassWarning(b'error msg')
+        assert type(warn.msg) is text_type, type(warn.msg)
+
     def test_sass_error_no_conversion(self):
         err = sass.SassError(u'error msg')
         assert type(err.msg) is text_type, type(err.msg)