expand gitignore
add license file
add requirements
add basic Makefile
init pantone app
add test runner
add paintstore to requirements
add PantoneColor model
add basic admin
add render_color_icon method and use in admin
add test for render_color_icon
add rgb <-> hex conversion methods
add test_hex_to_rgb
add test_rgb_to_hex
add validate mehtod to model
add test_validate
increase version