ping display error fix

processing if the packet length is not a multiple of 4.
ping display error fix

change in the packet header (first 12bytes)
In the packet header, it does not Encrypt / Decrypt.
ping display error fix

Removed obsolete code
Modified to correspond to Hangul

Change GetBytesFrom() to correspond to the Hangul(Korean).
Change the flexible method of generating Ping Dsplay packet.
Merge pull request #19 from prologos/patch-4

ping display error fix