Starts installing CEF libraries
function install(cef_version) {

  downloadCef(cef_version,function(err){

    if(err) {
      util.log('Failed to add dependencies','error');
      throw err;
    }

    copyDllWrapper(function(err) {
      if (err) {
        util.log('Failed to copy dll_wrapper.gyp');
        throw err;
      }

      util.log('Done!');
    });
  });
}