Cannot run from source

[Longhanks]

Hi,

after cloning the project, running npm install && gulp && npm test, I wasn't able to run the rtail-server at all. npm test fails to find socket.io:

> NODE_ENV=test node --harmony test/runner.js

  Running test suite with NODE_ENV=test (/./)
internal/modules/cjs/loader.js:573
    throw err;
    ^

Error: Cannot find module 'socket.io/node_modules/socket.io-client'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:571:15)
    at Function.Module._load (internal/modules/cjs/loader.js:497:25)
    at Module.require (internal/modules/cjs/loader.js:626:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at Object.<anonymous> (/home/aschulz/Projects/rtail/test/rtail-server.test.js:12:12)
    at Module._compile (internal/modules/cjs/loader.js:678:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:689:10)
    at Module.load (internal/modules/cjs/loader.js:589:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:528:12)
    at Function.Module._load (internal/modules/cjs/loader.js:520:3)
npm ERR! Test failed.  See above for more details.

I've tried to run npm install --save socket.io, but it didn't help. Can someone help me to get started?