Merge pull request Clever#24 from Clever/clean-up-the-unix

Clean up the unix

Author: Colin Schimmelfing

requirements.txt

@@ -1 +1,2 @@
+httmock>=1.2.2
 requests>=0.8.8

test/test_cert_pinning.py

@@ -18,11 +18,6 @@ def test_prod_api(self):
     district = clever.District.all()[0]
     self.assertEqual(district.name, 'Demo District')
 
-  def test_staging_api(self):
-    clever.api_base = 'https://api-staging.ops.clever.com'
-    district = clever.District.all()[0]
-    self.assertEqual(district.name, 'Demo District')
-
   def test_cert_failure(self):
     clever.api_base = 'https://httpbin.org'
     self.assertRaises(clever.APIConnectionError, clever.District.all)