Update newrelic.ini config to use heroku config vars

Using https://devcenter.heroku.com/articles/newrelic#node-js-agent-on-heroku as a guide, this seems like the thing to do.

Additional new relic should be put in code and should use the extra.heroku.php-includes option in composer.json
Add Memcache support
Merge pull request #97 from treeskelt/feature/memcache-support

Add Memcache support
Added quick docs about ext- requirements
Use 5.5.10 as default
Add default log paths for CakePHP applications
Merge pull request #102 from josegonzalez/cakephp-logs

Add default log paths for CakePHP applications
Added a timezone by default

All PHP date functions are triggering a warning if the timezone is not defined. The default config should allow having a working setup.
Merge pull request #104 from stof/patch-1

Added a timezone by default
Add v0.3.6 changelog
Merge branch 'development'
Use official repo of pecl/memcache
Update the Readme

* Updating the default versions for NGinx and PHP
* Removed an outdated note about the user-env-compile lab feature
* Added a note about ext requirements needing to be in the root package. Ref #97
Merge pull request #108 from stof/patch-1

Update the Readme
Fix the memcache revision
memcache: fix build script
Add note about using FriendsOfCake/app-template for repo layout
Re-order frameworks according to alphabetical order
Update supported frameworks list
Merge pull request #109 from josegonzalez/patch-2

Some readme updates