Added 'process' config option and now clear original div before appending

README.textile

@@ -39,9 +39,10 @@ h2. Options
 
 h3. Complete
 
-If you pass a function as a @complete@-option, your function will be executed when the search is complete and the results have been returned, right before they're appended to the page:
+If you pass a function as a @complete@-option, your function will be executed when the search is complete and the results have been returned, right before they're appended to the page.  Additionally, you can pass a function as a @process@-option that will allow you to make modifications per result (the following example truncates each result to 50 words):
 
 bc. $('#search_results').tapir({
   'token': '4dbfc79e3f61b05b53000021',
-  'complete' : function() { alert("I'm done searching!"); }
+  'complete' : function() { alert("I'm done searching!"); },
+  'process' : function(result) { result.summary = result.summary.split(' ', 50).join(' ') + '...'; return result; }
 });

jquery-tapir.js

@@ -22,7 +22,14 @@
       $.getJSON(
         'http://tapirgo.com/api/1/search.json?token=' + settings.token + '&query=' + paramValue(settings.query_param) + '&callback=?', function(data){
           if(settings['complete']) { settings.complete() }
+
+          // Clear div if we have results
+          if(data.length > 0)
+             el.empty(); 
+
           $.each(data, function(key, val) {
+            if(settings['process'])
+              val = settings.process(val);
             el.append('<div class="result"><h3><a href="' + val.link + '">' + val.title + '</a></h3><p>' + val.summary + '</p></div>');
           });
         }