Bugfixes and Dependency updates

• Bugfix: Flips two lines to allow scopes authenticating from another without stepping on each other's toes. (PR #144)
• Update rack dependency to >= 2.0.6 due to security vulnerability (CVE-2018-16471)
• Internal: Add Rubocop Lint checking
• Internal: Update RSpec to use .rspec file

v1.2.6

Separate test helpers to encapsulate Warden object mocking inside it's own class

v1.2.5

Expands on the test helpers available to make it easier for testing gems

Dawn

• updates the specs to run on rspec 3
• Add Strategy::Base#successful?
• Correctly handles Rack::Response (Grape issues)
• Fixes many typos in documentation
• Updates erratic specs to be more consistent