Node mod

Still not sure about including this as it's simply not good enough to be a "recommended" or "supported" solution, but may prevent users having to make the switch and just delay the inevitable!!

This "fix" looks for "/node/multiple" in the url and only appends "/input/bulk" if it's not found, it also accepts "true" in place of "ok". this means no change is required to the node module at this time. 

There is no extra error checking and if a stray value not between 0 - 255 slips in via Socket for instance emonhub will probably repeated attempt to post those values and no further data can be posted until emonhub is restarted.

ref https://github.com/emonhub/emonhub/issues/74