Merge branch 'release-0.2'
Added support for commands based on the ref that was committed to.
Deprecated $conf['job_cmd']; use $conf['job_cmds'] now instead.
Added the ref to show in the log output.
Renamed logs to logs_default so we don't nuke perms on subsequent updates.
Removed the logs_default dir from repo; easier just to create it during install.
Added error when logs can't be written to to help with troubleshooting.
Removed explicit job printing to screen; replaced with count of jobs added for better security.
Changed to a symlink strategy for scheduler.php.
Added last json write to file.
Added timestamp to the completed entries. Deprecated jobs_cmds instead use 'jobs'.
Version bumped from 0.2 to 0.3
Merge branch 'release-0.3'