title: Cannot find module 'findup-sync' when trying to run grunt
body: <p>I am having trouble running <code>grunt-cli</code> after installing it. I run</p>
  
  <pre><code>npm install -g grunt-cli
  </code></pre>
  
  <p>then running grunt errors with</p>
  
  <pre><code>    node.js:63
      throw e;
      ^
  Error: Cannot find module 'findup-sync'
      at loadModule (node.js:275:15)
      at require (node.js:411:14)
      at Object.&lt;anonymous&gt; (/home/tmartin/bin/grunt:9:14)
      at Module._compile (node.js:462:23)
      at Module._loadScriptSync (node.js:469:10)
      at Module.loadSync (node.js:338:12)
      at Object.runMain (node.js:522:24)
      at Array.&lt;anonymous&gt; (node.js:756:12)
      at EventEmitter._tickCallback (node.js:55:22)
      at node.js:773:9
  </code></pre>
  
  <p>This is what I have installed:</p>
  
  <pre><code>tmartin@timcomp:~$ npm list -g
  /home/tmartin/lib
  └─┬ grunt-cli@0.1.6
    ├─┬ findup-sync@0.1.2
    │ ├─┬ glob@3.1.21
    │ │ ├── graceful-fs@1.2.0
    │ │ ├── inherits@1.0.0
    │ │ └─┬ minimatch@0.2.11
    │ │   ├── lru-cache@2.2.2
    │ │   └── sigmund@1.0.0
    │ └── lodash@1.0.1
    └─┬ nopt@1.0.10
      └── abbrev@1.0.4
  </code></pre>