Add command line argv handling using go-arg
make hello world dumb stupid simple again
more swtiching to common code
move debugging options to support go-args
more debugging output cleanup
more debugging cleanups
fix null pointer crash
autogenerate README.md from doc.go (goreadme cmd)
remove passing arguements on a mouse click()
make defaults for padding, margin, stretchy, etc
add a checkbox widget
function rename to NewButton()
keep cleaning up toolkit code
fix date. I was somehow in the future
Signed-off-by: Jeff Carr <jcarr@wit.com>