Merge pull request #1 from PecanProject/master

update dlebauer fork
Updated migration check to most recent
Modifield LoadFLUXNET.sites.R to run on psql-pecan.bu.edu and move the site log into the data.atmosphere module
Merge pull request #280 from dlebauer/master

Updated migration check in read.settings
Modified download.Ameriflux.site to use an external file to look up site.id to FLUXNET.id mapping. Moved this file from inst to data in data.atmosphere module so that system.file could find it.
Merge branch 'master' of github.com:PecanProject/pecan