Execute update.rb under ruby1.8

Fails with ruby1.9:

| update.rb:33: syntax error, unexpected ':', expecting keyword_then or ';' or '\n'
| update.rb:49: syntax error, unexpected keyword_end, expecting $end

diff --git a/update.rb b/update.rb
index 37a6066..ab68683 100755 (executable)
--- a/update.rb
+++ b/update.rb
@@ -1,4 +1,4 @@
-#!/usr/bin/env ruby
+#!/usr/bin/env ruby1.8

 require 'git'
 require 'erb'
 require 'yaml'
 require 'git'
 require 'erb'
 require 'yaml'