Add author pages

[ledell]

The other R documentation sites (crantastic, rdocumentation.org, r-pkg.org) all have some sort of URL for each package author which shows a list of packages that they have authored.

I think rdrr.io is the most fully featured site (and the one I favor for linking to R documentation) but the one thing that seems to be missing is author pages. This would be a great feature for rdrr.io! I think rdrr.io is well suited to be the best place for authors to reference all their packages because unlike the other sites, rdrr.io includes R packages from GitHub, Bioconductor and R-Forge -- it's the most comprehensive place to host author pages. Is this something you would consider adding?

I don't know what happens with name collisions on crantastic or rdocumenation.org, but a page by name (instead of email address) is nice because people may be required to use different email addresses for different packages (school vs. work vs. personal email).