update clipboard tooltip text
<clipboard>
- <button type="button" class="btn btn-xs btn-default" title="Click to clipboard" data-clipboard-text={ opts.val }>
+ <button type="button" class="btn btn-xs btn-default" title="Copy to clipboard" data-clipboard-text={ opts.val }>
<i class="glyphicon glyphicon-copy"></i>
</button>
