remove leading comma form package.json

Author: nanov

package.json

@@ -31,7 +31,7 @@
     "url": "https://github.com/eCollect/vue-swipe-actions"
   },
   "dependencies": {
-    "hammerjs": "^2.0.8",
+    "hammerjs": "^2.0.8"
   },
   "main": "./dist/vue-swipe-actions.common.js",
   "devDependencies": {