Gemfile in groupify-0.5.1 vs Gemfile in groupify-0.6.0.rc1

@@ -2,17 +2,14 @@
 
 group :development do
   gem 'pry'
 end
 
+group :test do
+  gem 'coveralls', require: false
+end
+
 # Specify your gem's dependencies in groupify.gemspec
 gemspec
 
-platform :jruby do
-  gem "jdbc-sqlite3"
-  gem "activerecord-jdbcsqlite3-adapter"
-  
-  if defined?(RUBY_VERSION) && RUBY_VERSION < '1.9'
-    gem "json"
-  end
-end
-
+gem "jdbc-sqlite3", platform: :jruby
+gem "activerecord-jdbcsqlite3-adapter", platform: :jruby