How to use it？

[LIHU577]

Hi，I’m looking for a log , you make a great job . but how
to use it ,I would appreciate it if you can write some sample.
such as

what [format] and [...]should be like, I'm a little confuse

[kunaltyagi]

format is the printf string you'd use if you were using printf instead. Eg:

printf("%s: %f", name, length);
LOG_DEBUG("%s: %f", name, length);

[kunaltyagi]

Feel free to create a PR to improve the README