Create Route Migration (Trello #15)

* add migration
* add model
* revised schema.rb
Merge branch 'master' into create_route_migration
Create Route Migration (Trello #15)

* revised lat/long to floats; `point` datatype not supported in AR?
Merge branch 'master' into create_route_migration
Fix typo in Errand migration

* Unit test on Route requires this
Merge pull request #5 from LightningLord/create_route_migration

Create route migration