[Installer] Dont crash when deintegrating & there are multiple xcodeprojs

CHANGELOG.md

@@ -30,6 +30,10 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
   [Samuel Giddins](https://github.com/segiddins)
   [Xcodeproj#259](https://github.com/CocoaPods/Xcodeproj/issues/259)
 
+* Fix crash when deintegrating due to major version change and there are
+  multiple root-level Xcode projects.  
+  [Samuel Giddins](https://github.com/segiddins)
+
 
 ## 1.0.0.beta.1 (2015-12-30)
 

lib/cocoapods/installer.rb

@@ -505,7 +505,7 @@ module Pod
       UI.section('Re-creating CocoaPods due to major version update.') do
         projects = Pathname.glob(config.installation_root + '*.xcodeproj').map { |path| Xcodeproj::Project.open(path) }
         deintegrator = Deintegrator.new
-        projects.sort.each do |project|
+        projects.each do |project|
           config.with_changes(:silent => true) { deintegrator.deintegrate_project(project) }
           project.save if project.dirty?
         end