Add missing library.

package-lock.json

@@ -154,6 +154,17 @@
         "strict-uri-encode": "2.0.0"
       }
     },
+    "react": {
+      "version": "16.4.2",
+      "resolved": "https://registry.npmjs.org/react/-/react-16.4.2.tgz",
+      "integrity": "sha512-dMv7YrbxO4y2aqnvA7f/ik9ibeLSHQJTI6TrYAenPSaQ6OXfb+Oti+oJiy8WBxgRzlKatYqtCjphTgDSCEiWFg==",
+      "requires": {
+        "fbjs": "0.8.16",
+        "loose-envify": "1.3.1",
+        "object-assign": "4.1.1",
+        "prop-types": "15.6.1"
+      }
+    },
     "react-lifecycles-compat": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz",

package.json

@@ -18,6 +18,7 @@
   "author": "Herby Vojčík <herby@mailbox.sk>",
   "license": "MIT",
   "dependencies": {
+    "react": ">=16",
     "react-navigation": "^2.12.1"
   }
 }