move twig template engine into a plugin and introduce Phile_Template as service
added documentation
[REFACTOR] remove config of install_path and detect it automatic
[REFACTOR] remove config of install_path and detect it automatic
added open graph meta tags as example
[BUGFIX] merge config files recursive
[BUGFIX] make $filePath to an object property and accessible by getter and setter
update twig version to 1.14.*
merge latest with twig update
introduce new event trigger for request_uri
update documentation
[FEATURE] Cache System

- added CacheInterface
- added PHPFastCache as plugin
- implement cache as service
- use of cache if a cache service is registered
- enable cache by default
Merge pull request #12 from PhileCMS/feature/cacheEngineAsService

[FEATURE] Cache System
added delete method to the cache interface
[BUGFIX] the configuration merge do not replace defaults
move twig config to twig plugin
markdown formatting defaults
update core