promise-whip 
This packages contains some tiny promise helper method. Internally it uses bluebird..
The helpers!
runSeq
Runs jobs in sequential order:
whip.runSeq([promise1, promise2]).then(function () {
// This method will be executed once promise1 and
// afterwards promise2 has been resolved.
});
runParallel
Runs jobs in parallel:
whip.runParallel([promise1, promise2]).then(function () {
// This method will be executed once promise1 and
// promise2 has been resolved.
});
An additional parameter can be passed which defines how many jobs should be executed in parallel:
// Will behave just like runSeq:
whip.runParallel([promise1, promise2], 1).then(function () {});