Compute and minify an element's css selector
gistFileNameInput = '#gists > div:nth-child(4) > div > div.file-header > div.input-group.gist-filename-input > input.form-control.filename.js-gist-filename.js-blob-filename'
gistFileNameInput.length
> 151
newSelect = SmartSelect.cssPath(gistFileNameInput)
newSelect
> "div:nth-of-type(3) > div > div:nth-of-type(1) > div:nth-of-type(2) > input:nth-of-type(2)"
newSelect.length
> 89
document.querySelectorAll(newSelect)
> [input.form-control.filename.js-gist-filename.js-blob-filename]