=== Configuration details ===
You can mostly follow the guide at:
http://observium.org/wiki/FreeBSD_SVN_Installation

with the following notes:
- Installation directory is /usr/local/www/observium
- $config['fping'] should be set to '/usr/local/sbin/fping'
- The following lines should be added to /etc/crontab:

33	*/6	*	*	*	www	cd /usr/local/www/observium && /usr/local/bin/php discovery.php -h all > /dev/null 2>&1
*/5	*	*	*	*	www	cd /usr/local/www/observium && /usr/local/bin/php discovery.php -h new > /dev/null 2>&1
*/5	*	*	*	*	www	cd /usr/local/www/observium && /usr/local/bin/php poller.php -h all > /dev/null 2>&1

Notes:
- Setting $config['snmp']['intenal'] to true is not recommended. The
  php function snmp_set_quick_print() used by Observium leaves units like
  kB in the value and Observium currently does not deal with that correctly.
