v1.0.0
1. the Eye program run in background to protect my eye.
it use a config file like :
[General]
time_unit = min
work_time = 55
rest_time = 5
image_file = rei.jpg

the config file means : you need to take a rest for more than 5 minutes
every time you work for 55 minute. When you need to take a rest, the
screen will be coved by a image which is from image_file(rei.jpg)

the program has a tray, and you can use the tray to config, quit, and
make a imediate rest.
2. the program can only work in Linux now.