added gemnasium.com badge

[ael-code]

Thanks to the free service gemnasium.com we can easily monitor the dependencies version and receive security alerts. I've grant just the read permission thus only passive functionality of the service will be active (it won't generate automatic pull request for us)

https://gemnasium.com/github.com/insomnia-lab/libreant

[boyska]

couldn't we receive emails or sth like that? I'm not gonna watch that badge night and day :)

[ael-code]

@boyska wrote

couldn't we receive emails or sth like that? I'm not gonna watch that badge night and day :)

I'm not sure that with the free plan you can add email hooks, in any case with the trial plan I've the option enable, I think you should set in your own account.

Moreover I've tried to setup the "less enterprise" requires.io service but I fail. It seems that it couldn't properly fetch the setup.py file.