update pyproj to 1.8.5
update pre-requisites
don't need to import numpy
added Eric's support to 2-d lat/lon array back to proj wrapper
regenerate C source using newest version of Cython
change variable name
fix problems caused by change to "import numpy as np"
convert to np/plt (from numpy, pylab)
more examples converted to numpy/pyplot namespace.
more examples updated to numpy/pyplot namespace