I have forked the project on github, and made a few changes that you might want to consider:

1) Added search term highlighting to search result.

2) Made facet handling more robust (the current code does not handle facet values with whitespace or non-ASCII characters).

3) Use jQuery.ajax instead of jQuery.getJSON for queries – this makes it possible to use jsonp (which does away with CORS restrictions), and also makes it easier to set up the query (as you don’t have to construct the url).

4) Use click handlers for facets (both for adding and removing). This also makes the handlebars templates simpler.

A few more options:

5) Use the jquery.bbq library instead of modifying the page url directly (simpler and probably more effective, as jquery.bbq modifies the fragment part of the url, which can be done without a reload). Note: I’m not 100% sure how this plays with repeated parameters, like “fq”.

6) Use cdnjs.com (or similar) to access jquery, bootstrap etc instead of bundling these with solrstrap.