1.5.5.1 push and EOL notice added

Added a notice to the top of the salr.js file that basically says that SALR is no longer updated and provides a link to SALR Redux. Option to ignore the warning for the truly stubborn.

Note: This should push your branch up to 1.5.5(.1) as what you have is 1.5.4 with the web store version being 1.5.5. I just copied all files out of web store and pasted into the branch and then added the warning, and made no further edits of my own.