Fixed a typo
Update NGINX logging for latest l2met conventions
Merge pull request #17 from marcgg/patch-1

Fixed a typo
Improvement: A new way of building NGINX on Heroku
use nginx 1.5.7
feature: add headers-more-nginx module
feature: add appcache as mime type
Heroku nginx Tuning/Config

* Only run 1 worker, bump connections to 2048
* GZip everything, if possible, with high compression
Drop gzip compression level to 2.
More nginx tuning.

* Set bigger proxy buffers for responses
* Set accept_mutex off for 1 worker
Set static content and error paths.
Disable nginx Logging in Heroku app log
Re-enable heroku l2met access logging.