:preserve_host should default to true

Author: jaswope

lib/rack/reverse_proxy.rb

@@ -6,7 +6,7 @@ class ReverseProxy
     def initialize(app = nil, &b)
       @app = app || lambda { [404, [], []] }
       @matchers = []
-      @global_options = {:preserve_host => false, :matching => :all, :verify_ssl => true}
+      @global_options = {:preserve_host => true, :matching => :all, :verify_ssl => true}
       instance_eval &b if block_given?
     end