Add test for unicode (#2)

Author: nathanielherman

tests/test_client.py

@@ -1,3 +1,5 @@
+# coding: utf-8
+
 import pytest
 import scaleapi
 import time
@@ -207,6 +209,15 @@ def test_audiotranscription_fail2():
             attachment='some_non_url')
 
 
+def test_unicode_ok():
+    task = client.create_categorization_task(
+        callback_url='http://www.example.com/callback',
+        instruction='Hello, 世界',
+        attachment_type='website',
+        attachment='http://www.google.com/',
+        categories=['public', 'private'])
+
+
 def test_cancel():
     task = make_a_task()
     # raises a scaleexception, because test tasks complete instantly