chore(docs): Minor spelling and grammer changes.

README.md

@@ -10,9 +10,9 @@
 
 ## Intro to Node-Serialport
 
-Imagine a world in which you can write JavaScript to control blenders, lights, security systems, or even robots. That's right—robots! Thanks to Node Serialport, that world is here.
+Imagine a world where you can write JavaScript to control blenders, lights, security systems, or even robots. That's right—robots! Thanks to Node Serialport, that world is here.
 
-Node-Serialport provides a stream interface for the low-level serial port code necessary to controll [Arduino](http://www.arduino.cc/) chipsets, X10 interfaces, [Zigbee](http://www.zigbee.org/) radios, highway signs, lcd screens, cash drawers, motor controllers, sensor packages, fork lifts, modems, drones, CNC machines, plotters, vending machines, ccTalk coin accecptors, SMS Gateways, RFID scanners and much more. If if you have a hardware device with an [UART](https://en.wikipedia.org/wiki/Universal_asynchronous_receiver/transmitter) we can speak to it. The physical world is your oyster with this goodie.
+Node-Serialport provides a stream interface for the low-level serial port code necessary to controll [Arduino](http://www.arduino.cc/) chipsets, X10 interfaces, [Zigbee](http://www.zigbee.org/) radios, highway signs, lcd screens, cash drawers, motor controllers, sensor packages, fork lifts, modems, drones, CNC machines, plotters, vending machines, ccTalk coin accecptors, SMS Gateways, RFID scanners and much more. If you have a hardware device with a [UART](https://en.wikipedia.org/wiki/Universal_asynchronous_receiver/transmitter) we can speak to it. The physical world is your oyster with this goodie.
 
 For a full breakdown of why we made Node-Serialport, please read [NodeBots - The Rise of JS Robotics](http://www.voodootikigod.com/nodebots-the-rise-of-js-robotics). It explains why one would want to program robots in JS in the first place.