Fix Problem with MongoDB 3, using Mongoose 4.0.1

[aprabaldi]

Using mongodb 3, I get an error and a warning:
Updating Mongoose fixed the issue I had and the warning.

/usr/local/bin/sms-connector-lite/node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/base.js:246
throw message;
^
TypeError: Cannot read property 'length' of undefined
at processResults (node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/db.js:1581:31)
at node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/db.js:1619:20
at node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/db.js:1157:7
at node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/db.js:1890:9
at Server.Base._callHandler (node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/base.js:448:41)
at node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/server.js:481:18
at MongoReply.parseBody (node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/responses/mongo_reply.js:68:5)
at null. (node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/server.js:439:20)
at emit (events.js:95:17)
at null. (node_modules/express-sessions/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:201:13)