PurpleAir node server 2.0.2 released

[bpwwer]

PurpleAir recently discontinued the API that was being used by the node server.   Version 2.0.2 updates the node server to use the current API supported by PurpleAir.

The new API requires an API key to access the public sensor data.  Anyone can request an API key. To use verson 2.0.2 of the node server, you will first have to send email to contact at purpleair dot com and request a READ API key.   Use the API key they proved to configure the node server. 

A Custom Parameter called "APIKey" (note case) must be created to hold your API Key. You should be able to add this custom parameter after upgrading or delete version 2.0.1 and re-install version 2.0.2 (make note of the sensor ID's you previously configured as you'll need those).

[dbuss]

Your updated PG3 node server works great! Thank you!