fix: package.json & .snyk to reduce vulnerabilities

The following vulnerabilities are fixed with a Snyk patch:
- https://snyk.io/vuln/SNYK-JS-LODASH-567746

package.json

@@ -3,11 +3,15 @@
   "version": "0.0.1",
   "private": true,
   "scripts": {
-    "start": "node node_modules/react-native/local-cli/cli.js start"
+    "start": "node node_modules/react-native/local-cli/cli.js start",
+    "snyk-protect": "snyk protect",
+    "prepublish": "npm run snyk-protect"
   },
   "dependencies": {
     "minutes-seconds-milliseconds": "^1.0.3",
     "react": "^15.1.0",
-    "react-native": "0.27.2"
-  }
+    "react-native": "0.27.2",
+    "snyk": "^1.316.1"
+  },
+  "snyk": true
 }