Use anchor links for subhead instead of pseudo elements

When I hover over a subhead (h2), the section anchor appears, which is pretty awesome.

![screenshot 2014-01-15 12 45 16](https://f.cloud.github.com/assets/651753/1922905/d2ab4590-7e0c-11e3-8f16-1c74f68ec90f.png)


However, that element should be clickable, so I can easily link other readers to that section.

I have **not** tested this, merely meant as a suggestion and starting place. Good luck! :fireworks: Love A List Apart!