FIX ME: Add more example

ͨlibhzṩӿںlibhz⡣
1j_codeԱж
2hz_setupĿǰڲתģ·Լⲿģ顣
3hz_searchתģ飬ʼתģ
4ҲԵhz_init³ʼģ
5hz_convertִת

