Copy php includes set in composer.json to included ini directory.
Merge branch 'master' of https://github.com/CHH/heroku-buildpack-php into feature/php-includes
We should use $BUILD_DIR instead of $target.
Updated README.md with short description.
Merge pull request #31 from RobinvdVleuten/feature/php-includes

Copying project's ini files instead of adding directives to composer.json
Add new extension packaging system
Add newrelic support
Fix function call
Move some functions around
Set PATH to build dir
Test output
test php-config
Fetch php api version with php-config
Generate ext dir relative to BUILD_DIR
Use newrelic license from config key
Install newrelic daemon
Don't create /var/log/newrelic
Fix location for newrelic daemon
Add newrelic.ini
Remove unused variable