Fix cl-lib package require

2.2 isn't actually a version:

`cl-lib.el`
```
;;; Change Log:

;; Version 2.02 (30 Jul 93):
```

To be fair, 0.2 doesn't seem to be a version either, but that's what
[magit](https://github.com/magit/magit/blob/master/magit-pkg.el.in)
and a host of other packages seem to use.

This fixes an issue where `znc` can't be installed using
`package-install-packages`.
Merge pull request #7 from travis/master

Fix cl-lib package require