default to master on travis build

Author: JonRowe

Gemfile

@@ -7,7 +7,7 @@ gemspec
   if File.exist?(library_path)
     gem lib, :path => library_path
   else
-    gem lib, :git => "git://github.com/rspec/#{lib}.git", :branch => ENV.fetch('BRANCH',"2-99-maintenance") unless lib == 'rspec-support'
+    gem lib, :git => "git://github.com/rspec/#{lib}.git", :branch => ENV.fetch('BRANCH',"master") unless lib == 'rspec-support'
   end
 end