Add a mock() function

This is the same as the Mocker() however it looks more correct to do
@requests_mock.mock() rather than @requests_mock.Mocker().

Ideally mock() would be the decorator and Mocker() the context manager
but it doesn't really matter.

requests_mock/__init__.py

@@ -12,12 +12,13 @@
 
 from requests_mock.adapter import Adapter, ANY
 from requests_mock.exceptions import MockException, NoMockAddress
-from requests_mock.mocker import Mocker, MockerCore
+from requests_mock.mocker import mock, Mocker, MockerCore
 from requests_mock.mocker import DELETE, GET, HEAD, OPTIONS, PATCH, POST, PUT
 
 
 __all__ = ['Adapter',
            'ANY',
+           'mock',
            'Mocker',
            'MockerCore',
            'MockException',

requests_mock/mocker.py

@@ -152,3 +152,6 @@ def inner(*args, **kwargs):
                 return func(*args, **kwargs)
 
         return inner
+
+
+mock = Mocker

requests_mock/tests/test_mocker.py

@@ -50,7 +50,7 @@ def test_with_context_manager(self):
         self.assertMockStopped()
 
     @mock.patch('requests.adapters.HTTPAdapter.send')
-    @requests_mock.Mocker(real_http=True)
+    @requests_mock.mock(real_http=True)
     def test_real_http(self, real_send, mocker):
         url = 'http://www.google.com/'
 
@@ -61,17 +61,17 @@ def test_real_http(self, real_send, mocker):
         self.assertEqual(1, real_send.call_count)
         self.assertEqual(url, real_send.call_args[0][0].url)
 
-    @requests_mock.Mocker()
+    @requests_mock.mock()
     def test_with_test_decorator(self, m):
         self._do_test(m)
 
-    @requests_mock.Mocker(kw='mock')
+    @requests_mock.mock(kw='mock')
     def test_with_mocker_kwargs(self, **kwargs):
         self._do_test(kwargs['mock'])
 
     def test_with_decorator(self):
 
-        @requests_mock.Mocker()
+        @requests_mock.mock()
         def inner(m):
             self.assertMockStarted()
             self._do_test(m)