Merge pull request #4 from rlane/update

update to rust master
make lib LINK_ARGS=... lost -lglfw
Merge pull request #5 from bartschuller/link-args-glfw

make lib LINK_ARGS=... lost -lglfw
add color-rs
Merge pull request #6 from rlane/color-rs

add color-rs
add color-rs to the README
readme: add Users section
update to rust master