Add CDATA tags for HTML compliance

Add CDATA tags for HTML compliance.

Gets rid of annoying messages when we're running tests with Test::Unit

For example:

```
Loaded suite /vagrant/vendor/gems/ruby/1.8/gems/rake-0.9.6/lib/rake/rake_test_loader
Started
.ignoring attempt to close h.length;e++)d(g,h[e]); with script
  opened at byte 2049, line 53
  closed at byte 2203, line 57
  attributes at open: {"a"=>true}
  text around open: "ncrement'];for(e=0;e<h.length;e++)d(g,h["
  text around close: "0374cc93b70186a\");\n\n</script></head>\n<bo"
```