Bump version to 4.4.1

[franciscop]

Can node-s3-client be bumped to version 4.4.1 so we can install it with npm?

This still causes an error, since the latest merged code is not updated in any NPM version: #138

4.4.0 installed, since it's the same in releases: https://github.com/andrewrk/node-s3-client/releases

[jnleonard3]

@andrewrk is the only listed collaborator of this project on NPM, could @faceleg get some access since it seems he's a bit more active maintainer?

[jnleonard3]

Also, for anyone is awaiting fixes that would be in 4.4.1, #129 is relevant if you are evaluating if you should want to wait

[franciscop]

As an Open Source maintainer of several projects, I totally understand it. I guess I'll swith to knox (mentioned in that issue), thank you @andrewrk for getting this far even though all the bullsh*t you had to go through, I totally feel your pain.

[franciscop]

(I actually will leave this open for other people and just in case @andrewrk wants to look at easy issues to solve someday)

[faceleg]

If I get NPM access I will push updates

[joeruello]

Shameless bump @andrewrk @faceleg
Would love for this to be bumped as it's preventing our team from updating to node 6.