add .DS_Store file to ignore
Merge branch 'refs/heads/maksim'

Signed-off-by: Maksim Shmukler <m.shmukler@gmail.com>
add main.c file

Signed-off-by: Maksim Shmukler <m.shmukler@gmail.com>
add 3-rd line

Signed-off-by: Maksim Shmukler <m.shmukler@gmail.com>