Updates.

* Fix a typo in the newrelic config.
* Update the instructions in README.
* Update the url in .env to localhost.
Merge branch 'master' of https://github.com/anthonywu/celery-relic

Conflicts:
	.env
	newrelic.ini
	tasks.py
Run celery in multi mode.
Merge pull request #1 from amjith/master

NewRelic / amjith's changes and bug fixes