Change `secureOptions' to `secureProtocol' for HTTPS request

to meet the nodejs https module
see: http://nodejs.org/api/https.html#https_https_request_options_callback

or the following error happens when requesting to some hosts through https:
```
[Error: 140735221531008:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:../deps/openssl/openssl/ssl/s23_clnt.c:766:
]
````