extension for the swig templating engine, adding highlight.js code blocks to be rendered!

Wherever you're including require('swig'), you'll have to include swig-highlight as well.

Enable it with the helper like this:

var swig = require('swig');
require('swig-highlight').apply(swig);

apply adds the new tag into swig.

Use it barebone like this (tag name is customizable here):

var swig = require('swig'),
    swig-hl = require('swig-highlight');

swig.setTag('hlcode', swig-hl.parse, swig-hl.compile, swig-hl.ends, swig-hl.block);

You can start using {% highlight %}<CODE>{% endhighlight %} in your code.

For now you can enforce a language highlighting (list), or let highlight.js guess by omitting it.

{% highlight 'bash' %}
###### COMMENT HERE

if [ "$UID" -ne 0 ]
then
 echo "Superuser rights is required"
 echo 'Printing the # sign'
 exit 2
fi
{% endhighlight %}

You will need to read also highlight.js usage to make your html be correctly colorized.

As an easy hint, just include (as suggested by highlight.js authors) a default css from Yandex

<link rel="stylesheet" href="http://yandex.st/highlightjs/8.0/styles/default.min.css">

Using the highlight tag with the code being a variable instead of a string does not work currently.

There is no limitation around this, just requires quite a bit of coding, so PR are welcome!