Add touch2[export] task.

desc "Run JSDuck on Sencha Touch 2 (for internal use at Sencha)\n" +

     "touch2         - creates debug/development version\n" +

     "touch2[export] - creates export version\n" +

     "touch2[live]   - create live version for deployment\n"

task :touch2, [:mode] => :sass do |t, args|

  mode = args[:mode] || "debug"

  throw "Unknown mode #{mode}" unless ["debug", "live"].include?(mode)

  compress if mode == "live"

  throw "Unknown mode #{mode}" unless ["debug", "export", "live"].include?(mode)

  compress if mode == "export" || mode == "live"

  runner = JsDuckRunner.new

  runner.add_touch2