Current implementation cause callback untouched when using with other Promise library

[michaeljayt]

Like Promise.all(), after 2a2ec37 :

var url1, url2, callback1, callback2;
callback1 = function(){
    return 1;
}
callback2 = function(){
    return 2;
}
Promise.all([avalon.get(url1).then(callback1),avalon.get(url2).then(callback2)]).then(function(data){
    // This is expected to be `[1,2]`, 
    // but it just return [avalon.get(url1), avalon.get(url2)],
    // i.e. not propagate the Promise correctly.
    console.log(data);
});

[RubyLouvre]

已经修了