This is a mashup of two projects, let me give the project creators credit.
What I did is use the hardware interface & the code to turn the pin high for one sec & the gtalk robot modified to work on a jwchat.org client.
This can be modified to work with any jabber client. It did not work for me with gtalk. :(
My other code tweak was to change from a single user to a list of users that are able to control the Pi & garage door opener.
Add the Pi User, Pass & list of admin accounts
Set the chat server address
Here is the modified code on github.
And here is the video on how it was done