Some updates

[soundanalogous]

Regarding the setup instructions for StandardFirmataEthernet, the user now needs to uncomment a couple of includes for their particular ethernet hardware. See this section: https://github.com/firmata/arduino/blob/ethernet/examples/StandardFirmataEthernet/StandardFirmataEthernet.ino#L67-L106

Also, the second part of step 11 should read:

#define local_ip IPAddress(10, 0, 0, 15)

Another thing to note is that if the user uploads ConfigurableFirmata with all of the includes uncommented it will occupy nearly all of the flash and ram on an Arduino Uno so StandardFirmataEthernet is currently the better choice for anyone using and Arduino Uno or other ATmega328 or ATmega32u4-based board. Commenting out unused includes in Configurable is another approach to reducing ram and flash usage.

[rwaldron]

Another thing to note is that if the user uploads ConfigurableFirmata with all of the includes uncommented it will occupy nearly all of the flash and ram on an Arduino Uno

I actually forgot that I had to comment out these parts—thanks for the reminder.

Can you whip up a PR with the necessary changes?