Rakefile in ib-0.3.5 vs Rakefile in ib-0.4.0

@@ -1,2 +1,30 @@
 #!/usr/bin/env rake
 require "bundler/gem_tasks"
+
+# Travis support
+# cite from https://github.com/CocoaPods/Xcodeproj/blob/master/Rakefile
+def on_rvm?
+  `which ruby`.strip.include?('.rvm')
+end
+
+def rvm_ruby_dir
+  @rvm_ruby_dir ||= File.expand_path('../..', `which ruby`.strip)
+end
+
+desc 'Install dependencies'
+task :bootstrap, :use_bundle_dir? do |t, args|
+  options = []
+  options << "--without=documentation"
+  options << "--path ./travis_bundle_dir" if args[:use_bundle_dir?]
+  sh "bundle install #{options * ' '}"
+end
+
+begin
+  require 'rspec/core/rake_task'
+
+  RSpec::Core::RakeTask.new(:spec) do |spec|
+    spec.pattern = 'spec/**/*_spec.rb'
+    spec.rspec_opts = ['-cfs']
+  end
+rescue LoadError => e
+end