title: Nimbus not compatible with iOS 4.3 using cocoapods
body: <p>when I try to use <a href="http://cocoapods.org/" rel="nofollow">cocoapods</a> to install <a href="http://nimbuskit.info/" rel="nofollow">Nimbus</a> i get the following error: <code>[!] Nimbus (1.0.0) is not compatible with iOS 4.3.</code> </p>
  
  <p>I'm not sure where this iOS 4.3 came from.. but here are some more details:</p>
  
  <p>my Podfile content:</p>
  
  <pre><code>platform :ios
  
  pod 'AFNetworking', '0.9.1'
  
  pod 'SSToolkit'
  pod 'ConciseKit'
  pod 'Nimbus'
  </code></pre>
  
  <p>when I run <code>pod install</code> I get:</p>
  
  <pre><code>warning: Insecure world writable dir /usr/local in PATH, mode 040777
  warning: Insecure world writable dir /usr/local in PATH, mode 040777
  Resolving dependencies of `./Podfile'
  Updating spec repositories
  
  Cocoapods 0.17.0.rc1 is available.
  
  Resolving dependencies for target `default' (iOS 4.3)
  [!] Nimbus (1.0.0) is not compatible with iOS 4.3.
  </code></pre>
  
  <p>ideas?</p>