Updated dependencies in project and added dependency badge into readme

Hi,
i updated all [outdated sub-dependencies](https://www.versioneye.com/user/projects/52d67332ec13759b100003fb) on aleph's default branch.

I'm also doing little research about a dependency management, do you mind to answer to 2 short questions?

How are you keeping eye on dependencies in your open source projects? 
Does Factual  has any special process for handling dependencies or software licenses?