Do you need to quickly create a QR Code? Just use Google without any 3rd party software.
This is possibly the quickest method to create a QR Code with the help of Google's Chart API!
All you have to do is append what you want to this URL:
https://chart.googleapis.com/chart?chs=500x500&cht=qr&chl=
The appended text at the end can be almost anything. Adjust the values to get the size you want. 500px is currently the max size.
A working example:
https://chart.googleapis.com/chart?chs=500x500&cht=qr&chl=http://www.developpeers.com