typo fix

README.md

@@ -159,7 +159,7 @@ When you `require('tessel')` within a script which is executed on Tessel 2, this
 
 Tessel has two ports, A and B. They are referred to as `tessel.port.B`. `tessel.port['B']` is also an acceptable reference style.
 
-Tessel's ports can be used as module ports as in Tessel 1 (e.g. `accelerometer.use(tessel.port.B)`), or used as flexible GPIO pins (e.g. `myPin = tessel.port.A.pins[0]`).
+Tessel's ports can be used as module ports as in Tessel 1 (e.g. `accelerometer.use(tessel.port.B)`), or used as flexible GPIO pins (e.g. `myPin = tessel.port.A.pin[0]`).
 
 ### Modules