Add support for data-min-length attribute

Author: bigtunacan

lib/assets/javascripts/autocomplete-rails-uncompressed.js

@@ -48,7 +48,7 @@
   jQuery.railsAutocomplete.fn.extend({
     init: function(e) {
       e.delimiter = jQuery(e).attr('data-delimiter') || null;
-      e.min_length = jQuery(e).attr('min-length') || 2;
+      e.min_length = jQuery(e).attr('data-min-length') || jQuery(e).attr('min-length') || 2;
       e.append_to = jQuery(e).attr('data-append-to') || null;
       e.autoFocus = jQuery(e).attr('data-auto-focus') || false;
       function split( val ) {