Rename `OAuth2Gateway` to `OAuth2Plugin`

README.md

@@ -53,11 +53,11 @@ stub.FooRpc(request, credentials=call_credentials)
 ```python
 import grpc
 
-from auth import OAuth2Gateway
+from auth import OAuth2Plugin
 from users.users_pb2 import GetRequest
 from users.users_pb2_grpc import UsersStub
  
-oauth2_plugin = OAuth2Gateway(
+oauth2_plugin = OAuth2Plugin(
     client_id='client_id', client_secret='client_secret', 
     token_url='https://example.com/oauth/token', audience='audience'
 )

perxis/auth.py

@@ -6,7 +6,7 @@ from oauthlib.oauth2 import BackendApplicationClient, OAuth2Token
 from requests_oauthlib import OAuth2Session
 
 
-class OAuth2Gateway(grpc.AuthMetadataPlugin):
+class OAuth2Plugin(grpc.AuthMetadataPlugin):
     _token = None
 
     def __init__(self, client_id: str, client_secret: str, token_url: str, audience: str,