Documentation for developers

[zarthan]

@codersaur it may be as simple as this post.

App and driver porting to Hubitat

I thought I'd jot down a few of the driver porting changes I've encountered. Please add additional ones you find to this list. Replace physicalgraph with hubitat Replace variables beginning with data with device.data Add to params calls that give a java error the following before headers: requestContentType: "application/json", Replace pause(int) with pauseExecution(long) (units are milliseconds) include ‘asynchttp_v1’ is not supported - comment this out and replace affected code with syn…