Update RN and its dependencies

.babelrc

@@ -1,3 +1,3 @@
 {
-  "presets": ["react-native"]
+  "presets": ["module:metro-react-native-babel-preset"],
 }

package.json

@@ -17,6 +17,7 @@
   },
   "dependencies": {
     "@ptomasroos/react-native-multi-slider": "^1.0.0",
+    "ajv": "^5.5.2",
     "assert": "^1.4.1",
     "csvtojson": "^2.0.8",
     "date-range": "0.0.2",
@@ -28,27 +29,26 @@
     "object-path": "^0.11.4",
     "obv": "0.0.1",
     "prop-types": "^15.6.2",
-    "react": "16.4.1",
-    "react-native": "~0.56.0",
+    "react": "^16.6.3",
+    "react-native": "^0.57.8",
     "react-native-calendars": "^1.19.3",
     "react-native-document-picker": "^2.1.0",
-    "react-native-fs": "^2.10.14",
+    "react-native-fs": "^2.13.3",
     "react-native-hyperlink": "0.0.14",
     "react-native-modal-datetime-picker-nevo": "^4.11.0",
     "react-native-push-notification": "^3.1.1",
     "react-native-restart": "0.0.7",
     "react-native-share": "^1.1.3",
     "react-native-vector-icons": "^5.0.0",
-    "realm": "^2.21.0"
+    "realm": "^2.22.0"
   },
   "devDependencies": {
-    "@babel/register": "^7.0.0-beta.55",
-    "babel-eslint": "^8.2.6",
-    "babel-preset-react-native": "^5.0.0",
+    "@babel/core": "^7.2.2",
     "chai": "^4.1.2",
     "dirty-chai": "^2.0.1",
     "eslint": "^4.19.1",
     "eslint-plugin-react": "^7.8.2",
+    "metro-react-native-babel-preset": "^0.51.1",
     "mocha": "^5.2.0"
   },
   "description": "A menstrual cycle tracking app that's open-source and leaves your data on your phone. Use it to track your menstrual cycle or for fertility awareness!",