fix bug: lack case

Author: imcvampire

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-truncate-filter",
-  "version": "1.1.4",
+  "version": "1.1.5",
   "description": "A filter for VueJs to truncate string",
   "main": "vue-truncate.js",
   "repository": {

vue-truncate.js

@@ -16,7 +16,7 @@
       clamp = clamp || '...';
       length = length || 30;
 
-      if (text.length < length) return text;
+      if (text.length <= length) return text;
 
       var tcText = text.slice(0, length - clamp.length);
       var last = tcText.length - 1;