Fixed issue with requiring the new type_sanitizer module in different ways

auto/generate_test_runner.rb

@@ -7,9 +7,6 @@
 $QUICK_RUBY_VERSION = RUBY_VERSION.split('.').inject(0){|vv,v| vv * 100 + v.to_i }
 File.expand_path(File.join(File.dirname(__FILE__),'colour_prompt'))
 
-HERE = File.expand_path(File.dirname(__FILE__))
-require "#{HERE}/type_sanitizer"
-
 class UnityTestRunnerGenerator
 
   def initialize(options = nil)
@@ -20,6 +17,7 @@ class UnityTestRunnerGenerator
       when Hash     then @options.merge!(options)
       else          raise "If you specify arguments, it should be a filename or a hash of options"
     end
+    require "#{File.expand_path(File.dirname(__FILE__))}/type_sanitizer"
   end
 
   def self.default_options