With some small fixes, works very well with TS-412s

Many thanks for this plugin. Needed one or two small fixes but have now got this working perfectly with some TS-412s, please find below my suggested changes;

In plugin
Line 21 – “tmphd2, tmlhd3 tmphd4,” should read “tmphd2, tmphd3, tmphd4,”
# DISKUSAGE requires bc (e.g. apt-get install bc)
Lines 183, 187 – use of -le should be -ge
Lines 200, 204, 208 – references to $TEMPHD4 should be $TEMPHD

In example config
Line 24 – “check_command check_qnap!freeram!20!5” should read “check_command check_qnap!freeram!80!95”
Line 90 – “check_command check_qnap!diskused!10!5” should read “check_command check_qnap!diskused!90!95”