Doc update + deprecation notice (#78)

Author: Florent Clairambault

README.md

@@ -71,11 +71,11 @@ sample_transport=RequestsHTTPTransport(
     headers={
         "Content-type": "application/json",
     },
-    verify=False
+    verify=False,
+    retries=3,
 )
 
 client = Client(
-    retries=3,
     transport=sample_transport,
     fetch_schema_from_transport=True,
 )

gql/client.py

@@ -52,6 +52,12 @@ def __init__(
         self.transport = transport
         self.retries = retries
 
+        if self.retries:
+            log.warning(
+                "The retries parameter on the Client class is deprecated."
+                "You can pass it to the RequestsHTTPTransport."
+            )
+
     def validate(self, document):
         if not self.schema:
             raise Exception(