Add service account credentials (#25)
* Add service account credentials
* Address review comments
* Fix lint
* Fix docstring
* Address review comments
diff --git a/docs/reference/google.oauth2.service_account.rst b/docs/reference/google.oauth2.service_account.rst
new file mode 100644
index 0000000..cc4e438
--- /dev/null
+++ b/docs/reference/google.oauth2.service_account.rst
@@ -0,0 +1,7 @@
+google.oauth2.service_account module
+====================================
+
+.. automodule:: google.oauth2.service_account
+ :members:
+ :inherited-members:
+ :show-inheritance: