add Contact model from clever API

Author: notsoluckycharm

README.md

@@ -37,6 +37,7 @@ Get started by importing the `clever` module and setting your authentication met
 
 The `clever` module exposes classes corresponding to resources:
 
+* Contact
 * District
 * DistrictAdmin
 * School

clever/__init__.py

@@ -719,7 +719,7 @@ def iter(cls, auth=None, **params):
 
     requestor = APIRequestor(auth)
     url = cls.class_url()
-    params['limit'] = cls.ITER_LIMIT    
+    params['limit'] = cls.ITER_LIMIT
 
     while url:
       response, auth = requestor.request('get', url, params)
@@ -728,7 +728,7 @@ def iter(cls, auth=None, **params):
         break
       for datum in convert_to_clever_object(cls, response, auth):
         yield datum
-      
+
       url = get_link(response, 'prev' if 'ending_before' in params else 'next')
       # params already included in url from get_link
       params = {}
@@ -772,6 +772,10 @@ def delete(self, **params):
 # API objects
 
 
+class Contact(ListableAPIResource):
+  pass
+
+
 class District(ListableAPIResource):
   pass