Merge pull request #13 from joelpob/master

Drupal7 urls + use /tmp instead of /dev/shm

/tmp is faster because tmpfs has really terrible performance for concurrent stats().
Add more documentation for cpufreq check
Get rid of statcache option.

It was originally there because it improved performance under /dev/shm.
No longer required (we're using /tmp). Improves Drupal7 performance,
does not hurt Wordpress performance.