Allow adding of token and secret while initializing request_oauth

etsy/request_oauth.py

@@ -4,9 +4,9 @@ from requests_oauthlib import OAuth1Session
 
 class EtsyOAuthClient(OAuth1Session):
     def __init__(self, oauth_consumer_key,
-                 oauth_consumer_secret, etsy_env=EtsyEnvProduction()):
+                 oauth_consumer_secret, etsy_env=EtsyEnvProduction(), **kwargs):
         super(EtsyOAuthClient, self).__init__(
-            oauth_consumer_key, oauth_consumer_secret)
+            oauth_consumer_key, oauth_consumer_secret, **kwargs)
         self.request_token_url = etsy_env.request_token_url
         self.access_token_url = etsy_env.access_token_url
         self.signin_url = etsy_env.signin_url