Merge pull request #1 from rpruim/beta

Beta -- updated from rpruim
remove extra space (git test)
Added the stylized US map data to sysdata and sandbox; added theme_map() function to maps2.R; slight change to mUSMap function (annd documentation)
fixed small typo on mUSMap
Merge pull request #359 from bborgesr/beta

Merging in Barbara's map updates