Not Available for firefox 7.0.1? Rated 5 out of 5 stars

I found this google seach engine by image really useful for me. But, once I updated my firefox to 7.0.1. It is no more available to be use. Here, I'm requesting creator to update it so that it is available for latest firefox version. Thank you very much.

This review is for a previous version of the add-on (0.1.1-signed.1-signed).