More IR sensor alias entries
Don't assume Serialport exists unless necessary.
v0.8.9
add Bean-IO link to readme
Merge pull request #444 from monteslu/master

add Bean-IO link to readme
Feature implementation and bug fixes on RBG.

Adds isOn property for RGB that looks to see if ANY of the colors are
on. When calling .on(), it leaves the led as-is if it’s already on.

Adds chaining capability to .on() and .off()

Supports saving previous color as requested in #375

Updates toggle/strobe/stop functions to work with RGB.

Removes functions not applicable to RBG
(fade, fadeIn, fadeOut, pulse, brightness)
Note, we could potentially implement these later with appropriate calculations.
Adafruit Motor Shield V2 support

In addition to Adafruit support, address these issues:

* Tests were not checking to make sure that pins were being set in the
right order #433
* Fixes the unrelated start(), stop(), start() issue brought up by
@meshy in the #433 discussion thread
* Broke out resume, setPin and setPWM to wrapper functions for
simplicity
v0.8.10

- Motor class upgrade: Adafruit Motor Shield V2 support
Merge pull request #447 from Resseguie/rgb-ison

Adds isOn property to RGB
v0.8.11
Piezo.prototype.tone will no longer attempt to play a NaN tone. Fixes #413
Fixing and adding tests for wonky values sent to Piezo.play and Piezo.tone. Wrapping console.warn in debug.
Piezo.tone now throws Error if tone or duration are invalid. Tests updated to match.
Readme refresh