set_coordinates specs passing
set_duration spec passing
extracted call_coordinates_retriever
extracted call_distance_matrix_helper
refactored call_distance_matrix_helper
3 unit tests for update passing
added new url shortner to tripcontroller#finalize
distance_matrix_helper related specs passing
it does not call distance_matrix_helper spec passing
Merge branch 'change_placeholders' of https://github.com/LightningLord/errandsontheway into add_url_shortner
Merge pull request #55 from LightningLord/add_url_shortner

added new url shortner to tripcontroller#finalize
Merge branch 'master' into trip_unit_tests
Merge branch 'master' of https://github.com/LightningLord/errandsontheway into add_url_shortner
Merge pull request #56 from LightningLord/trip_unit_tests

Trip unit tests
Merge branch 'master' of https://github.com/LightningLord/errandsontheway into change_placeholders