index.js
function mergeApp(env, app, conf, ENV, fn) {
  fetch(conf, 'apps', function(err, apps) {
    if (err) return fn(err);
    debug('# APP');
    debug(app);
    mergeConf(env, apps, app, ENV, fn);
  });
}
function mergeApp(env, app, conf, ENV, fn) {
  fetch(conf, 'apps', function(err, apps) {
    if (err) return fn(err);
    debug('# APP');
    debug(app);
    mergeConf(env, apps, app, ENV, fn);
  });
}
function mergeApp ( env , app , conf , ENV , fn ) { fetch ( conf , 'apps' , function ( err , apps ) { if ( err ) return fn ( err ) ; debug ( '# APP' ) ; debug ( app ) ; mergeConf ( env , apps , app , ENV , fn ) ; } ) ; }
Merge app into ENV

@param {String} env
@param {String} app
@param {Object} conf
@param {Object} ENV
@param {Function} fn
Merge app into ENV