Use Browserify 13.x, which supports IE 9 & 10

Author: JamesMessinger

package-lock.json

@@ -68,7 +68,7 @@
     "karma-verbose-reporter": "0.0.6",
     "mocha": "^3.5.0",
     "npm-check-updates": "^2.12.1",
-    "simplifyify": "^3.2.4",
+    "simplifyify": "3.2.1",
     "sinon": "^3.1.0",
     "version-bump-prompt": "^3.1.2"
   },