title: Cannot find module 'crypto-js' Ubuntu 14.04
body: <p>I am working with node-red and I am facing some issues with some packages I have downloaded from this <a href="https://github.com/willem4ever/node-red-ttn" rel="nofollow">github</a>. I have followed the instructions to get npm and to install it but I get error with missing libraries that are present in my system, have anyone experienced the same?</p>
  
  <p>Thanks in advance!</p>
  
  <pre><code>lo@lo-desktop:~$ sudo npm install crypto-js
  npm http GET https://registry.npmjs.org/crypto-js
  npm http 200 https://registry.npmjs.org/crypto-js
  npm http GET https://registry.npmjs.org/crypto-js/-/crypto-js-3.1.6.tgz
  npm http 200 https://registry.npmjs.org/crypto-js/-/crypto-js-3.1.6.tgz
  crypto-js@3.1.6 node_modules/crypto-js
  
  locate crypto-js
  /home/lo/node_modules/crypto-js
  /home/lo/node_modules/crypto-js/CONTRIBUTING.md
  /home/lo/node_modules/crypto-js/LICENSE
  /home/lo/node_modules/crypto-js/README.md
  /home/lo/node_modules/crypto-js/aes.js
  /home/lo/node_modules/crypto-js/bower.json
  /home/lo/node_modules/crypto-js/cipher-core.js
  /home/lo/node_modules/crypto-js/core.js
  /home/lo/node_modules/crypto-js/crypto-js.js
  /home/lo/node_modules/crypto-js/docs
  /home/lo/node_modules/crypto-js/enc-base64.js
  /home/lo/node_modules/crypto-js/enc-hex.js
  /home/lo/node_modules/crypto-js/enc-latin1.js
  /home/lo/node_modules/crypto-js/enc-utf16.js
  /home/lo/node_modules/crypto-js/enc-utf8.js
  /home/lo/node_modules/crypto-js/evpkdf.js
  /home/lo/node_modules/crypto-js/format-hex.js
  /home/lo/node_modules/crypto-js/format-openssl.js
  /home/lo/node_modules/crypto-js/hmac-md5.js
  /home/lo/node_modules/crypto-js/hmac-ripemd160.js
  /home/lo/node_modules/crypto-js/hmac-sha1.js
  /home/lo/node_modules/crypto-js/hmac-sha224.js
  /home/lo/node_modules/crypto-js/hmac-sha256.js
  /home/lo/node_modules/crypto-js/hmac-sha3.js
  /home/lo/node_modules/crypto-js/hmac-sha384.js
  /home/lo/node_modules/crypto-js/hmac-sha512.js
  /home/lo/node_modules/crypto-js/hmac.js
  /home/lo/node_modules/crypto-js/index.js
  /home/lo/node_modules/crypto-js/lib-typedarrays.js
  /home/lo/node_modules/crypto-js/md5.js
  /home/lo/node_modules/crypto-js/mode-cfb.js
  /home/lo/node_modules/crypto-js/mode-ctr-gladman.js
  /home/lo/node_modules/crypto-js/mode-ctr.js
  /home/lo/node_modules/crypto-js/mode-ecb.js
  /home/lo/node_modules/crypto-js/mode-ofb.js
  /home/lo/node_modules/crypto-js/package.json
  /home/lo/node_modules/crypto-js/pad-ansix923.js
  /home/lo/node_modules/crypto-js/pad-iso10126.js
  /home/lo/node_modules/crypto-js/pad-iso97971.js
  /home/lo/node_modules/crypto-js/pad-nopadding.js
  /home/lo/node_modules/crypto-js/pad-pkcs7.js
  /home/lo/node_modules/crypto-js/pad-zeropadding.js
  /home/lo/node_modules/crypto-js/pbkdf2.js
  /home/lo/node_modules/crypto-js/rabbit-legacy.js
  /home/lo/node_modules/crypto-js/rabbit.js
  /home/lo/node_modules/crypto-js/rc4.js
  /home/lo/node_modules/crypto-js/ripemd160.js
  /home/lo/node_modules/crypto-js/sha1.js
  /home/lo/node_modules/crypto-js/sha224.js
  /home/lo/node_modules/crypto-js/sha256.js
  /home/lo/node_modules/crypto-js/sha3.js
  /home/lo/node_modules/crypto-js/sha384.js
  /home/lo/node_modules/crypto-js/sha512.js
  /home/lo/node_modules/crypto-js/tripledes.js
  /home/lo/node_modules/crypto-js/x64-core.js
  /home/lo/node_modules/crypto-js/docs/QuickStartGuide.wiki
  
  
  
  lo@lo-desktop:~$ node-red -v
  Welcome to Node-RED
  ===================
  
  12 Apr 09:11:41 - [info] Node-RED version: v0.13.4
  12 Apr 09:11:41 - [info] Node.js  version: v0.10.25
  12 Apr 09:11:41 - [info] Linux 4.2.0-27-generic ia32 LE
  12 Apr 09:11:41 - [info] Loading palette nodes
  12 Apr 09:11:43 - [warn] ------------------------------------------
  12 Apr 09:11:43 - [warn] [rpi-gpio] Info : Ignoring Raspberry Pi specific node
  12 Apr 09:11:43 - [warn] [TTN] Error: Cannot find module 'crypto-js'
  12 Apr 09:11:43 - [warn] ------------------------------------------
  12 Apr 09:11:43 - [info] Settings file  : /home/lo/.node-red/settings.js
  12 Apr 09:11:43 - [info] User directory : /home/lo/.node-red
  12 Apr 09:11:43 - [info] Flows file : /home/lo/.node-red/flows_loshora-desktop.json
  12 Apr 09:11:43 - [info] Server now running at http://127.0.0.1:1880/
  12 Apr 09:11:43 - [info] Starting flows
  12 Apr 09:11:43 - [info] Started flows
  </code></pre>