added schema

Signed-off-by: Andriy Kalashnykov <[email protected]>

Author: AndriyKalashnykov

graph/schema.graphqls

@@ -37,6 +37,10 @@ type Mutation {
     createLink(input: NewLink!): Link!
     createUser(input: NewUser!): String!
     login(input: Login!): String!
-    # we'll talk about this in authentication section
     refreshToken(input: RefreshTokenInput!): String!
 }
+
+schema {
+    query: Query
+    mutation: Mutation
+}