Simpler XMLHttpRequest wrapper

simplerXHR.js

var simplerXHR = function( method, url) {
    var _xhr = new XMLHttpRequest(); 
    _xhr.open( method, url ); 
    _xhr.setup = function(cb){ // hacky? maybe
        cb(_xhr);
        return _xhr;
    };
    _xhr.done = function(cb){ // hacky? maybe
        _xhr.onreadystatechange = function() {
            if ( _xhr.readyState === 4 ) {
                cb( _xhr.responseText );
            }
        };
        return _xhr;
    };
    return _xhr;
};

/*

simplerXHR('get', 'http://google.com')
.done(function(data) {
    console.log(data);
}).send();

//OR/////////////////////////////////////////

simplerXHR('get', 'http://google.com')
.done(function(data) {
    console.log(data);
})
.setup(function (xhr) {
    xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
})
.send(JSON.stringify({'sd' : 23}));

*/