I don't like the failed specs to always come back!

Use the RSpec documentation formatter & tuned the spec:portability task to tests against the same Ruby version tested on Travis CI

Guardfile

@@ -1,4 +1,4 @@
-guard :rspec, :version => 2 do
+guard :rspec, :version => 2, :keep_failed => false, :cli => '-f doc' do
   watch(%r{^spec/.+_spec\.rb$})
   watch(%r{^lib/(.+)\.rb$})     { |m| "spec/#{m[1]}_spec.rb" }
   watch('spec/spec_helper.rb')  { "spec" }

Rakefile

@@ -14,19 +14,33 @@ namespace(:spec) do
          system "cmd /c echo -----------#{version}------------ & " +
            "pik use #{version} & " +
            "bundle install & " +
-           "bundle exec rake spec"
+           "bundle exec rspec spec"
       end
     end
   else
     desc "Run all specs on multiple ruby versions (requires rvm)"
     task(:portability) do
-      %w[1.8.7 1.9.2 ree].each do |version|
+      travis_config_file = File.expand_path("../.travis.yml", __FILE__)
+      begin
+        travis_options ||= YAML::load_file(travis_config_file)
+      rescue => ex
+        puts "Travis config file '#{travis_config_file}' could not be found: #{ex.message}"
+        return
+      end
+
+      travis_options['rvm'].each do |version|
         system <<-BASH
           bash -c 'source ~/.rvm/scripts/rvm;
                    rvm #{version};
-                   echo "--------- version #{version} ----------\n";
+                   ruby_version_string_size=`ruby -v | wc -m`
+                   echo;
+                   for ((c=1; c<$ruby_version_string_size; c++)); do echo -n "="; done
+                   echo;
+                   echo "`ruby -v`";
+                   for ((c=1; c<$ruby_version_string_size; c++)); do echo -n "="; done
+                   echo;
                    bundle install;
-                   bundle exec rake spec'
+                   bundle exec rspec spec -f doc 2>&1;'
         BASH
       end
     end