LED Strip (sorry the branch name is still neopixel_strip)

Here is the pull request for the generic version from [here](https://github.com/firmata/arduino/issues/167)
This string is too long. Strings are extremely expensive in microcontrollers with limited SRAM such as the ATMega328p (Arduino Uno). For now, either leave this commented out as you have or shorten it to as few characters as possible. I had proposed [a couple of new ways to handle errors](https://github.com/firmata/arduino/pull/80) a while back but was not able to get consensus around a solution. I need to reopen that discussion.