Update to v0.60.2

[Chris Watson]

Hello,

I have made a bugfix update; the package is now at v0.60.2

There was a bug in how "rich.club.norm" calculated the p-values. For the fix, see the "NEWS.md" file here: https://github.com/cwatson/brainGraph/blob/master/NEWS.md

Let me know if you have any questions,

Chris