Upgrade to babel6 and enable some presets.

package.json

@@ -14,8 +14,8 @@
   },
   "scripts": {
     "reskindex": "./reskindex.js -h header",
-    "build": "babel src -d lib --source-maps --stage 1",
-    "start": "babel src -w -d lib --source-maps --stage 1",
+    "build": "babel src -d lib --source-maps",
+    "start": "babel src -w -d lib --source-maps",
     "lint": "eslint src/",
     "lintall": "eslint src/ test/",
     "clean": "rimraf lib",
@@ -24,6 +24,7 @@
     "test-multi": "karma start $KARMAFLAGS --single-run=false"
   },
   "dependencies": {
+    "babel-runtime": "^6.11.6",
     "browser-request": "^0.3.3",
     "classnames": "^2.1.2",
     "draft-js": "^0.8.1",
@@ -56,11 +57,17 @@
     "let's stick with v5 for now."
   ],
   "devDependencies": {
-    "babel": "^5.8.23",
-    "babel-core": "^5.8.38",
+    "babel-cli": "^6.5.2",
+    "babel-core": "^6.14.0",
     "babel-eslint": "^6.1.0",
-    "babel-loader": "^5.4.0",
+    "babel-loader": "^6.2.5",
+    "babel-plugin-transform-runtime": "^6.15.0",
     "babel-polyfill": "^6.5.0",
+    "babel-preset-es2015": "^6.14.0",
+    "babel-preset-es2016": "^6.11.3",
+    "babel-preset-es2017": "^6.14.0",
+    "babel-preset-react": "^6.11.1",
+    "babel-preset-stage-0": "^6.5.0",
     "eslint": "^2.13.1",
     "eslint-plugin-flowtype": "^2.17.0",
     "eslint-plugin-react": "^6.2.1",