AbstractConfigLoader class added
CoreConfigClass added
CoreConfig carga la configuracion del archivo config.php a params
Typo fixed in AbstractConfigLoader
CoreConfig merges config.php and config.test.php files
InvalidConfigException added
It's meant to be thrown when a config.php file doesn't returns an Array
AbstractConfigLoader renamed to ConstantsConfig
The classname is more meaningful because all params params are defined as
constants when method save is called
Configuration by environmnt overrides config.php variables
CoreConfig added to Config class
README.md updated with config.php info
Merge branch 'feature/core-config' into develop