Update wiki for missing Serial docs

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WebIOPi version used?
=> 0.6

Python version used?
=> 2.7

Distro used? (WebIOPi has only been tested on Raspbian Wheezy)
=> Raspbian

Raspberry Pi board revision? (1 or 2)
=> 2

Please provide any additional information below.

Please provide an example of how to write to the usb0 serial port in Python.

I am looking to add a serial write to my usb-serial device in a custom macro 
function, but am not sure how to do this using webiopi since you can't import 
the serial library.

Please (safely) assume that I have no idea how to do this, so include whatever 
libraries, correct usage of webiopi.deviceInstance(""), and whatever is 
necessary to actually follow through with the write command.

I have spent over 40 hours looking into this, anything helps! Thank you!!!

Original issue reported on code.google.com by sellm...@hotmail.com on 12 Nov 2013 at 12:35

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Hi Erik,

I made a donation for the extensive work you've done and in hopes you could 
help me out with this issue. Any pointers would be a huge help!

Original comment by sellm...@hotmail.com on 19 Nov 2013 at 7:19

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Original comment by tro...@trouch.com on 27 Nov 2013 at 9:17

• Changed title: Update wiki for missing Serial docs
• Changed state: Accepted

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Original comment by tro...@trouch.com on 4 Jan 2014 at 9:00

• Added labels: Priority-High
• Removed labels: Priority-Medium

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Original comment by tro...@trouch.com on 4 Jan 2014 at 9:01