Upgrade babel to enable typescript syntax

Author: vhfmag

.babelrc

@@ -1,3 +1,5 @@
 {
-  "presets": ["es2015"]
+  "presets": [
+    "@babel/preset-env"
+  ]
 }

package.json

@@ -14,12 +14,13 @@
     "test:watch": "npm test -- --watch"
   },
   "devDependencies": {
-    "babel-cli": "^6.14.0",
-    "babel-core": "^6.14.0",
-    "babel-eslint": "^7.0.0",
-    "babel-jest": "^20.0.0",
-    "babel-polyfill": "^6.16.0",
-    "babel-preset-es2015": "^6.14.0",
+    "@babel/cli": "^7.0.0",
+    "@babel/core": "^7.0.0",
+    "@babel/polyfill": "^7.0.0",
+    "@babel/preset-env": "^7.0.0",
+    "babel-core": "^7.0.0-bridge.0",
+    "babel-eslint": "^9.0.0",
+    "babel-jest": "^23.4.2",
     "babylon": "^6.17.2",
     "coveralls": "^2.11.8",
     "eslint": "^3.12.1",