0.2.1: Update README for the new windowed mode

0.2.1: make the window background transparent with compositor and wm settings

0.2.0: add missing header changes from previous commit

0.2.0: implement program options and arguments (getopt)

render in windowed-mode

small tweaks

implement CPU temperature text

display buffered mem

use bigger sized type for measurements

fix full value when turning swap off

put XFlush() call at the right place

fix crash on systems without swap

implement swap meter

Update README

add README