7/18 Add a command to Busybox

android@mask:/tmp$ adb push busybox /data/local/
681 KB/s (1130132 bytes in 1.618s)
android@mask:/tmp$ adb shell
# /data/local/busybox moko
--- Hello moko from busybox +++
# /data/local/busybox moko --help
BusyBox v1.13.2 (2010-05-24 02:42:50 CST) multi-call binary
Usage: moko No options. Just demo how to add a help for a command.
No options. Just demo how to add a help for a command.
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