create a way to list all of the packages in GRAN

[eread-usgs]

No description provided.

[ldecicco-USGS]

I think the list should also include a description and maintainer. Can be pulled from the DESCRIPTION file in the package?

[jordansread]

in the meantime, we could add this simple command:

available.packages(contrib.url(c("USGS"='http://owi.usgs.gov/R')))

[ldecicco-USGS]

That works as a quick fix, but a little messy output for the casual user. On the other hand, that contrib.url function is cool!

[jordansread]

Agreed.

this is cleaner:

names(available.packages(contrib.url(c("USGS"='http://owi.usgs.gov/R')))[,1])

[jordansread]

See #89

[ldecicco-USGS]

Actually, I don't think we should close this issue. We should still make a nice table, but for now, people can see the list with the instructions.

[jordansread]

agreed. I didn't close it.