Merge pull request #57 from LightningLord/change_placeholders

Change placeholders
Implemented set_coordinates unit test on errand

  *also had to refactor valid_errand factory
Merge branch 'master' into errand_spec
Merge pull request #58 from LightningLord/errand_spec

Errand spec
took out unnecessary line from coordinatesretriever
Merge branch 'master' into refactor_coordinates_retriever
3 trips_controller#show specs passing
Merge pull request #59 from LightningLord/refactor_coordinates_retriever

Refactor coordinates retriever
Merge branch 'master' into trips_controller_spec
Implemented distance_matrix_helper_spec

  *extracted make_api_call method from get_trip_duration
  *1 spec passing
Merge pull request #60 from LightningLord/trips_controller_spec

Trips controller spec
Merge branch 'master' into distance_matrix_helper_spec
Merge pull request #61 from LightningLord/distance_matrix_helper_spec

Distance matrix helper spec
added vcr and fakeweb to gem file
Merge branch 'master' into vcr
set up vcr on current tests
debugged ending duration by switching order of two lines
Merge pull request #62 from LightningLord/vcr

Vcr
Merge branch 'master' into debug_duration
Merge pull request #63 from LightningLord/debug_duration

Debug duration