Instructions for using patched get_iplayer script

[dinkypumpkin]

In response to off-list queries, I've written some instructions on how 
to use my patched get_iplayer script.  The instructions can found in the 
github repo wiki at the link below:

https://github.com/dinkypumpkin/get_iplayer/wiki/instructions

I'll include this link in any future patch messages.  Contact me 
off-list if you have any additions or correction.