Add missing description to package.json 😐

package.json

@@ -1,7 +1,7 @@
 {
   "name": "smart-truncate",
   "version": "0.0.4",
-  "description": "",
+  "description": "A small library that truncates a string. It can insert or append an ellipsis at any desired position of the truncated result.",
   "main": "smart-truncate.js",
   "scripts": {
     "test": "node_modules/.bin/mocha --reporter spec",