- adding toplevel readme for github

git-svn-id: https://pysal.googlecode.com/svn@1430 363a8f54-61ba-11de-bb41-d1906ad598ae
- starting update of changelog

git-svn-id: https://pysal.googlecode.com/svn@1431 363a8f54-61ba-11de-bb41-d1906ad598ae
- adding tests to moran and geary
Merge branch 'master' of github.com:sjsrey/pysal