bin/bundle in bundler-0.9.4 vs bin/bundle in bundler-0.9.5

@@ -1,4 +1,11 @@
+# Check if an older version of bundler is installed
+require 'bundler'
+$:.each do |path|
+  if path =~ %r'/bundler-0.(\d+)' && $1.to_i < 9
+    abort "Please remove older versions of bundler. This can by running `gem cleanup`."
+  end
+end
 require 'bundler/cli'
 
 begin
   Bundler::CLI.start
 rescue Bundler::BundlerError => e
\ No newline at end of file