show how to plot markers and label them with text.
added plot marker example
added contourf,contour,pcolor
tested with contour,contourf and pcolor.
This commit was manufactured by cvs2svn to create tag 'v0_3_2'.
added BASEMAP_DATA_PATH change
documented BASEMAP_DATA_PATH
version 0.3.2
upped version number
upped version