Extract ORMs from doorkeeper

This PR removes doorkeeper ORM specifics, in favor of extending it with
other rubygems.

The specs defined in this project are still considered canonical, and
the goal is for extension rubygems to set doorkeeper as a git submodule,
and running its test suite against the specific ORM that is being
extended.

See doorkeeper-gem/doorkeeper-mongodb#2

.travis.yml

@@ -12,30 +12,7 @@ env:
   - rails=4.1.0
   - rails=4.2.0
 
-gemfile:
-  - Gemfile
-  - gemfiles/Gemfile.mongoid2.rb
-  - gemfiles/Gemfile.mongoid3.rb
-  - gemfiles/Gemfile.mongoid4.rb
-  - gemfiles/Gemfile.mongo_mapper.rb
-
-services:
-  - mongodb
-
 matrix:
   exclude:
     - env: rails=3.2.0
       rvm: 2.2
-
-    - gemfile: gemfiles/Gemfile.mongoid2.rb
-      env: rails=4.1.0
-    - gemfile: gemfiles/Gemfile.mongoid2.rb
-      env: rails=4.2.0
-
-    - gemfile: gemfiles/Gemfile.mongoid3.rb
-      env: rails=4.1.0
-    - gemfile: gemfiles/Gemfile.mongoid3.rb
-      env: rails=4.2.0
-
-    - gemfile: gemfiles/Gemfile.mongoid4.rb
-      env: rails=3.2.0

README.md

@@ -19,13 +19,10 @@ https://github.com/doorkeeper-gem/doorkeeper/releases.
 ## Table of Contents
 
 - [Useful links](#useful-links)
-- [Requirements](#requirements)
 - [Installation](#installation)
 - [Configuration](#configuration)
     - [Active Record](#active-record)
-    - [Mongoid / MongoMapper](#mongoid--mongomapper)
-        - [Mongoid indexes](#mongoid-indexes)
-        - [MongoMapper indexes](#mongomapper-indexes)
+    - [Other ORMs](#other-orms)
     - [Routes](#routes)
     - [Authenticating](#authenticating)
     - [Internationalization (I18n)](#internationalization-i18n)
@@ -55,12 +52,6 @@ https://github.com/doorkeeper-gem/doorkeeper/releases.
 - For documentation, please check out our [wiki](https://github.com/doorkeeper-gem/doorkeeper/wiki)
 - For general questions, please post it in [stack overflow](http://stackoverflow.com/questions/tagged/doorkeeper)
 
-## Requirements
-
-- Ruby >= 2.0.0
-- Rails >= 3.2
-- ORM ActiveRecord, Mongoid, MongoMapper
-
 ## Installation
 
 Put this in your Gemfile:
@@ -88,29 +79,12 @@ Don't forget to run the migration with:
 
     rake db:migrate
 
-### Mongoid / MongoMapper
-
-Doorkeeper currently supports MongoMapper, Mongoid 2 and 3. To start using it,
-you have to set the `orm` configuration:
-
-``` ruby
-Doorkeeper.configure do
-  orm :mongoid2 # or :mongoid3, :mongoid4, :mongo_mapper
-end
-```
-
-#### Mongoid indexes
-
-Make sure you create indexes for doorkeeper models. You can do this either by
-running `rake db:mongoid:create_indexes` or (if you're using Mongoid 2) by
-adding `autocreate_indexes: true` to your `config/mongoid.yml`
-
-#### MongoMapper indexes
+### Other ORMs
 
-Generate the `db/indexes.rb` file and create indexes for the doorkeeper models:
+See [doorkeeper-orms project] for mongoid and mongomapper support. Follow along
+the implementation in that repository to extend doorkeeper with other ORMs.
 
-    rails generate doorkeeper:mongo_mapper:indexes
-    rake db:index
+[doorkeeper-orms project]: https://github.com/doorkeeper-gem/doorkeeper-orms
 
 ### Routes
 

config/locales/en.yml

@@ -14,36 +14,6 @@ en:
               relative_uri: 'must be an absolute URI.'
               secured_uri: 'must be an HTTPS/SSL URI.'
 
-  mongoid:
-    attributes:
-      doorkeeper/application:
-        name: 'Name'
-        redirect_uri: 'Redirect URI'
-    errors:
-      models:
-        doorkeeper/application:
-          attributes:
-            redirect_uri:
-              fragment_present: 'cannot contain a fragment.'
-              invalid_uri: 'must be a valid URI.'
-              relative_uri: 'must be an absolute URI.'
-              secured_uri: 'must be an HTTPS/SSL URI.'
-
-  mongo_mapper:
-    attributes:
-      doorkeeper/application:
-        name: 'Name'
-        redirect_uri: 'Redirect URI'
-    errors:
-      models:
-        doorkeeper/application:
-          attributes:
-            redirect_uri:
-              fragment_present: 'cannot contain a fragment.'
-              invalid_uri: 'must be a valid URI.'
-              relative_uri: 'must be an absolute URI.'
-              secured_uri: 'must be an HTTPS/SSL URI.'
-
   doorkeeper:
     applications:
       confirmations:
@@ -148,4 +118,4 @@ en:
           oauth2_provider: 'OAuth2 Provider'
           applications: 'Applications'
       application:
-        title: 'OAuth authorize required'
+        title: 'OAuth authorize required'

doorkeeper.gemspec

@@ -26,6 +26,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency "timecop", "~> 0.7.0"
   s.add_development_dependency "database_cleaner", "~> 1.3.0"
   s.add_development_dependency "rspec-activemodel-mocks", "~> 1.0.0"
-  s.add_development_dependency "bcrypt-ruby", "~> 3.0.1"
   s.add_development_dependency "pry", "~> 0.10.0"
 end

lib/doorkeeper.rb

@@ -47,10 +47,6 @@
 require 'doorkeeper/rails/helpers'
 
 require 'doorkeeper/orm/active_record'
-require 'doorkeeper/orm/mongo_mapper'
-require 'doorkeeper/orm/mongoid2'
-require 'doorkeeper/orm/mongoid3'
-require 'doorkeeper/orm/mongoid4'
 
 module Doorkeeper
   def self.configured?