if bcrypt is not loaded, give instructions of how to install it

dcrec1 · binarylogic · commit 2a33f3ec0ffe · 2009-11-12T13:43:12.000+08:00
diff --git a/lib/authlogic/crypto_providers/bcrypt.rb b/lib/authlogic/crypto_providers/bcrypt.rb
@@ -1,6 +1,7 @@
 begin
   require "bcrypt"
 rescue LoadError
+  "sudo gem install bcrypt-ruby"
 end
 
 module Authlogic
