Use relative paths in nginx.conf.
Added tests for nginx.conf.
Updated README as `heroku config:add PATH` is no longer needed.

Closes #22.
Make sed work on both Linux and OSX in newrelic package script.

sed threw a 'bad flag in substitute command: f' when run. Added a -e
flag to fix this.
Nginx version: 1.2.8.

Closes #24.
Nginx version: 1.4.0.

Closes #26.
Nginx version: 1.4.1.

Closes #27.
PHP version: 5.4.15.

Closes #28.
PHP version: 5.4.16.

Closes #29.
PHP version: 5.4.17.

Closes #30.
Compile PHP with freetype support

Closes #32.
Export $PATH and $LD_LIBRARY_PATH when bundling PHP.

Closes #31.

(cherry picked from commit cac0e3d7fe05ad9549833c05deea55b6abe33bde)
Also set $LD_LIBRARY_PATH via .profile.d mechanism.
merged with latest iph/master
fix for versions + prod.yml config file