Docs incorrectly characterize how Parse.Promise.when callbacks work

[braker1nine]

Since #115 was reverted, the corresponding docs changes in #116 should be reverted as well. At least until that code can make it's way back into the project.

[homburg]

+1 was expecting #115 behavior from docs. Looking forward to 1.7

[fatuhoku]

For anyone else wondering how to get 1.7 behaviour (where Parse.Promise.when(arrayOfPromises) returns an array of results) on 1.6.x, you can use arguments (inspired by http://stackoverflow.com/a/24870523/590767):

var _ = require('lodash');
// ...
            var returnArgumentsArrayAsResultsForParseJSSDKVersion1_6_14 = function () { return _.toArray(arguments) };

            someFunctionThatReturnsAnArrayOfPromises()
                .done(returnArgumentsArrayAsResultsForParseJSSDKVersion1_6_14)
                .done((results) => {
                    //  Do something with results.
                    done();
                });