add FreeBSD support
Merge pull request #35 from mmoll/freebsd

Add FreeBSD support
Added collectd::plugin::exec
Fixed excessive copy-paste on comment link
Merge pull request #37 from footballradar/plugin_exec

Added collectd::plugin::exec
Fix link to irq plugin in README
Merge pull request #38 from mattcottingham/patch-1

Fix link to irq plugin in README