Add a test page for the minified version

This is needed to ensure the minified code pass all the tests.

FUTURE: this page (and tests/test.html) will be generated automatically.
Add autolinking feature (enable_autolinking)

Add a new feature enable_autolinking: if set to true, bare links will be automatically turned into urls.
If you write something like `muh http://google.com`, you'll get `muh [url]http://google.com[/url]`, without inserting the angle brackets.

* Develop the new feature
* Add new tests
* Commented some tests related to another feature in test_quote_4chan
* Add the "enable autolinking" checkbox to the mkd.html web page
* Update the documentation
* Update the test page
* Update the minified js
Merge pull request #16 from alfateam123/autourl

enable autolinking