Update README.rst

Author: tariqdaouda

README.rst

@@ -66,7 +66,7 @@ Initialization and document saving
 
   conn = Connection()
   conn.createDatabase(name = "test_db")
-  db = self.conn["test_db"] #all databases are loaded automatically into the connection and are accessible in this fashion
+  db = conn["test_db"] #all databases are loaded automatically into the connection and are accessible in this fashion
   collection = db.createCollection(name = "users") #all collections are also loaded automatically
   # collection.delete() # self explanatory