解决安装mongoose时，node-gyp报错问题

安装mongoose是系统报错，显示找不到gssapi/gssapi.h:

In file included from ../lib/kerberos.cc:1:0:
../lib/kerberos.h:5:27: fatal error: gssapi/gssapi.h: No such file or directory
 #include <gssapi/gssapi.h>
                           ^
compilation terminated.

解决方法，安装缺乏的库：

$ apt-get install libkrb5-dev