convert to Rails 5.1, handle CORS requests, add Rubocop, convert to A…

…PI-only app

.gitignore

@@ -15,3 +15,6 @@
 /log/*
 !/log/.keep
 /tmp
+
+# Ignore encrypted secrets key file.
+config/secrets.yml.key

.rubocop.yml

@@ -0,0 +1,12 @@
+Rails:
+  Enabled: true
+AllCops:
+  AutoCorrect: true
+  TargetRubyVersion: 2.4.0
+  Include:
+    - '**/Gemfile'
+    - '**/Rakefile'
+  Exclude:
+   - 'bin/*'
+   - 'db/seeds.rb'
+   - 'db/schema.rb'

Gemfile

@@ -1,34 +1,26 @@
-source 'https://rubygems.org'
+# frozen_string_literal: true
 
+source 'https://rubygems.org'
+ruby '2.4.0'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '4.2.6'
+gem 'rails', '5.1.0'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
-# Use SCSS for stylesheets
-gem 'sass-rails', '~> 5.0'
-# Use Uglifier as compressor for JavaScript assets
-gem 'uglifier', '>= 1.3.0'
-# Use CoffeeScript for .coffee assets and views
-gem 'coffee-rails', '~> 4.1.0'
 # See https://github.com/rails/execjs#readme for more supported runtimes
 # gem 'therubyracer', platforms: :ruby
 
-# Use jquery as the JavaScript library
-gem 'jquery-rails'
-# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
-gem 'turbolinks'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.0'
 # bundle exec rake doc:rails generates the API under doc/api.
 gem 'sdoc', '~> 0.4.0', group: :doc
 
-gem 'acts-as-taggable-on', '~> 3.5.0'
-gem 'acts_as_follower', '~> 0.2.1'
-gem 'devise', '~> 4.2.0'
+gem 'acts-as-taggable-on', git: 'https://github.com/mbleigh/acts-as-taggable-on'
+gem 'acts_as_follower'
+gem 'devise', git: 'https://github.com/gogovan/devise.git', branch: 'rails-5.1'
 gem 'jwt', '~> 1.5.4'
-gem 'rack-cors', '~> 0.4.0'
 gem 'puma'
+gem 'rack-cors', '~> 0.4.0'
 
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'
@@ -42,13 +34,12 @@ gem 'puma'
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug'
+  gem 'listen'
 end
 
 group :development do
-  # Access an IRB console on exception pages or by using <%= console %> in views
-  gem 'web-console', '~> 2.0'
-
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
+  gem 'pry'
+  gem 'rubocop', require: false
   gem 'spring'
 end
-