Fixing Apache 2.4 example config

Using the config before my commit (including "Order allow,deny") my apache (2.4.4) always showed an 403-Error on any OC page.
Don't know exactly why that line is bad, but Apache also recommends it this way. (http://httpd.apache.org/docs/2.4/upgrading.html#run-time)

And it works :)
Merge pull request #213 from flohtux/patch-1

Fixing Apache 2.4 example config