this tutorial did not write to the database with the protocol set to json. It worked when changed to line (influxdata#737)

Author: nathan-sixnines

examples/tutorial_pandas.py

@@ -12,7 +12,7 @@ def main(host='localhost', port=8086):
  user = 'root'
  password = 'root'
  dbname = 'demo'
- protocol = 'json'
+ protocol = 'line'
 
  client = DataFrameClient(host, port, user, password, dbname)