must select it in menuconfig before compile it

1. ./scripts/feeds uninstall -a
2. ./scripts/feeds update -a
3. ./scripts/feeds install -a
4. cp .defconfig .config
5. make menuconfig and select it
6. make package/app_example/compile V=s
7. commit .config and .defconfig, in order to add it as default

• app_example An application example
• kmod_example A kernel module example
• capwapc_sim A capwap simulator
• capwapc main capwap client on AP
• libcfg main config management library
• libok_util oakridge's util APIs, e.g. list
• libif interface library
• libnmsc nmsc json parser
• libservices each services implementation