kraken: usage of boost program_option for the configuration
kraken: adapt mock_kraken to the new configuration
kraken: add a comment for configuration
kraken: don't expose the vm attribute of Configuration
Tyr: add fare in dataset family type
Merge pull request #568 from antoine-de/add_fare_on_tyr

Tyr: add fare in dataset family type
Script_release: add a helpfull tip
kraken: configuration is now const
Merge pull request #566 from kinnou02/refacto_config

kraken: usage of boost program_option for the configuration
Merge pull request #569 from l-vincent-l/add_var_script_release

Script_release: add a helpfull tip
Route: add direction field.
PtRef: main destination is better as a place

this way we have more informations
Merge pull request #550 from aelkhour/route-direction

Route: add direction field.
ed

Create physical mode of GtfsData
ed

refacto