Fix ruby1.9 compatibility

Rakefile

@@ -15,12 +15,11 @@ namespace(:test) do
 
   desc "Run all tests on multiple ruby versions (requires rvm)"
   task(:portability) do
-    versions = %w( 1.8.6  1.8.7 )
-    versions.each do |version|
+    %w( 1.8.6  1.8.7  1.9.1  1.9.2 ).each do |version|
       system <<-BASH
         bash -c 'source ~/.rvm/scripts/rvm;
-                 rvm use #{version};
-                 echo "--------- `ruby -v` ----------\n";
+                 rvm #{version};
+                 echo "--------- v#{version} ----------\n";
                  rake -s test:all'
       BASH
     end

lib/watchr/script.rb

@@ -77,7 +77,7 @@ def reload
     def initialize(path = nil)
       @path = path
       @rules = []
-      @default_action = lambda {}
+      @default_action = Proc.new {}
       @ec = EvalContext.new(self)
     end
 
@@ -159,7 +159,7 @@ def default_action(&action)
     # Reset script state
     def reset
       @rules = []
-      @default_action = lambda {}
+      @default_action = Proc.new {}
     end
 
     # Eval content of script file.