Obtaining places near search location

* still need to work out testing
changed form to show params with symbols
added route for create errand
create factory for errand
refactored getting coordinates to accept only one address. Trello #54
Created custom routes for final trips

  *post /trips/finalize
  *get /:url
  *also deleted empty routes_spec
Implementing Finalize Trip Feature

  *Added a button on button show page that posts
  *Added finalize action which creates a secure url
  *Added blank summary action and views
Errand needs its own coordinates model
ErrandsController#create: user can choose an errand

* retrieving coordinates, saving errand
Implementing Trip Summary View

   * summary page is displaying trip info
   * wrote helper methods to format the durations for the ueser
   * fixed routing error bug
ErrandsController#create: trello #45

* only one test truly required
* team decision: there's no scenario for an errand not being
  saved, so it's not accommodated.
Reconciling different version of specs/controllers/options_controller_spec.rb
Merge pull request #27 from LightningLord/errand-create

Errand create
merged master
two trip model specs passing
Controller tests for #finalize passing
  *expect it to set a secure url
  *expect it to redirect
Merge pull request #28 from LightningLord/finalize_trip

Finalize trip
fixed merge conflicts