- This program is released with GPLv3+ license.
- build: ~$ ./configure && make && make install
- default install dir is set to "(configure_dir)/install" 
- if you needs, make symlink '/usr/bin/amn' to '(configure_dir)/install/.../amn' 
  or set PATH to '(configure_dir)/install/.../amn'
  amn automatically resolve the self-exist dirpath.
