Docs are out of date or contain errors

[rankam]

• There is no type NumericalField, it is NumericField
• Client doesn't accept username as an parameter
  client = Client("my-index", username="user", password="my-password")
• The following example that you show doesn't work - you can't set a Python datetime object in Redis

import datetime

from redisearch import Client

START_TIME = datetime.datetime.now()

client = Client("my-index")

client.redis.set("start-time", START_TIME)

• This example is missing a colon

try:
    client.info()
except ResponseError
    # Index does not exist. We need to create it!
    client.create_index(SCHEMA, definition=definition)

[chayim]

Thanks @rankam! I issued a pull request to update the documents.