removed .cvsignore files, they are not needed
fixed time zone offset bug in num2date.
docstring tweaks
include time-zone offset in num2date and date2num.
Updated talk with JPL stuff, NCAR, ipython, trimmed down text, etc.
initial commit of new demo
updated win32 requirements
updated install doc
better way to handle backwards compatibility in axes.get_position()
Fix xlabel on top axes to say what it is.