Add appraisal as dev dependency

Author: jtmalinowski

Rakefile

@@ -4,9 +4,10 @@ rescue LoadError
   puts 'You must `gem install bundler` and `bundle install` to run rake tasks'
 end
 
-
 Bundler::GemHelper.install_tasks
 
+require 'appraisal'
+
 require 'rake/testtask'
 
 Rake::TestTask.new(:test) do |t|
@@ -16,6 +17,4 @@ Rake::TestTask.new(:test) do |t|
   t.verbose = false
 end
 
-
 task default: :test
-

react-rails.gemspec

@@ -14,13 +14,14 @@ Gem::Specification.new do |s|
   s.author = ['Paul O’Shannessy']
   s.email = ['paul@oshannessy.com']
 
+  s.add_development_dependency "bundler", [">= 1.2.2"]
+  s.add_development_dependency "appraisal"
+  s.add_development_dependency "sqlite3" # needed for the dummy app
+
   s.add_dependency 'execjs'
   s.add_dependency 'rails', '>= 3.1'
   s.add_dependency 'react-source', '0.4.1'
 
-  # needed for the dummy app
-  s.add_development_dependency "sqlite3"
-
   s.files = Dir[
     'lib/**/*',
     'README.md',