title: Cocoapods with Xcode 6 and 10.10 Yosemite
body: <p>After initially upgrading to 10.10 and XCode6-Beta, I tried to run 'pod update' and I received this error:</p>
  
  <pre><code>cannot load such file -- xcodeproj/prebuilt/universal.x86_64-darwin14-2.0.0/xcodeproj_ext (LoadError)
  </code></pre>
  
  <p>I tried to update Cocoapods using 'sudo gem install cocoapods', but received another error:</p>
  
  <pre><code>Fetching: xcodeproj-0.17.0.gem (100%)
  Building native extensions.  This could take a while...
  ERROR:  Error installing cocoapods:
  ERROR: Failed to build gem native extension.
  
  "/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby" -rubygems /Library/Ruby/Gems/2.0.0/gems/rake-10.1.1/bin/rake RUBYARCHDIR=/Library/Ruby/Gems/2.0.0/gems/xcodeproj-0.17.0/ext RUBYLIBDIR=/Library/Ruby/Gems/2.0.0/gems/xcodeproj-0.17.0/ext
  /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
  checking for -std=c99 option to compiler... *** extconf.rb failed ***
  Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers.  Check the mkmf.log file for more details.  You may need configuration options.
  </code></pre>
  
  <p>Has anyone else been able to successfully use Cocoapods with Xcode 6 on 10.10 Yosemite?</p>