荒野无灯K2P固件隐藏彩蛋开启代码

20170726新固件部分扩展的显示与隐藏：

隐身：
// LS Emulator
（KMS & JBLS）nvram set ext_show_lse=0 
// Shellinabox
nvram set ext_show_siab=0 
// Kcptun 
nvram set ext_show_kcptun=0 
nvram commit
显身：
nvram set ext_show_pppoesvr=1 闪讯
nvram set google_fu_mode=0xDEADBEEF Googlefu
nvram set ext_show_lse=1 KMS
nvram set ext_show_siab=1 Shellinabox
nvram set ext_show_kcptun=1 Kcptun
nvram commit 保存