update development dependencies

Gemfile

@@ -1,5 +1,10 @@
 source 'https://rubygems.org'
 
+git_source(:gitlab) do |repo_name|
+  repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
+  "https://gitlab.com/#{repo_name}.git"
+end
+
 # Declare your gem's dependencies in dunlop-ember.gemspec.
 # Bundler will treat runtime dependencies like base dependencies, and
 # development dependencies will be added by default to the :development group.
@@ -17,7 +22,8 @@ group :development, :test do
   gem 'rspec-rails'
   gem 'cancancan'
   gem 'slim-rails'
-  gem 'dunlop-core',  github: 'companytools/dunlop-core',  branch: 'master'
+  gem 'paperclip', '~> 5.3'
+  gem 'dunlop-core',  gitlab: 'benja-2/dunlop-core',  branch: 'master'
   #gem 'dunlop-core', path: '~/development/rails/components/dunlop-core'
   gem 'factory_girl_rails'
   gem 'active_model_serializers'