title: Sencha command - not a valid sdk directory, please cd into a valid directory
body: <p>I'm having a problem with sencha command.  I've cd'd into the path containing the SDK and then pointed to the path of my app but I get the above error.  Is this a beta bug or am I missing something?  Not sure what else to try....</p>
  
  <p>My command prompt:</p>
  
  <pre><code>C:\Program Files (x86)\SenchaSDKTools-2.0.0-beta3&gt;sencha app create MyApp C:\Development\MyNewApp
  </code></pre>