Fixed syntax compatibility for pre 1.9 rubies

lib/cocoapods/command/project.rb

@@ -107,7 +107,7 @@ module Pod
             ) % missing_pods.map { |p| "`#{p}'" }.join(', ')
           end
 
-          run_install_with_update(pods: @pods)
+          run_install_with_update(:pods => @pods)
         else
           UI.puts "Update all pods".yellow unless @pods
           run_install_with_update(true)