Use babel 6

- Fix travis.yml to be able to use babel

Author: Syati

.babelrc

@@ -1,4 +1,3 @@
 {
-  "stage": 0,
-  "loose": "all"
+   "presets": ["es2015", "stage-0"]
 }

.travis.yml

@@ -1,3 +1,10 @@
 language: node_js
+sudo: false
+cache:
+  directories:
+    - node_modules
 node_js:
-  - "iojs"
+  - "4"
+  - "5"
+before_install:
+  - npm install -g babel-cli

package.json

@@ -4,8 +4,9 @@
   "description": "Thunk middleware for Redux.",
   "main": "lib/index.js",
   "scripts": {
-    "prepublish": "rimraf lib && babel src --out-dir lib",
-    "test": "mocha --compilers js:babel/register --reporter spec test/*.js"
+    "compile": "babel src --out-dir lib",
+    "prepublish": "rimraf lib && npm run compile",
+    "test": "mocha --compilers js:babel-core/register --reporter spec test/*.js"
   },
   "repository": {
     "type": "git",
@@ -22,12 +23,15 @@
   "author": "Dan Abramov <dan.abramov@me.com>",
   "license": "MIT",
   "devDependencies": {
-    "babel": "^5.6.14",
-    "babel-core": "^5.6.15",
-    "babel-eslint": "^3.1.20",
+    "babel": "^6.1.18",
+    "babel-core": "^6.2.1",
+    "babel-eslint": "^5.0.0-beta4",
+    "babel-cli": "^6.2.0",
+    "babel-preset-es2015": "^6.1.18",
+    "babel-preset-stage-0": "^6.1.18",
     "chai": "^3.2.0",
-    "eslint": "^0.24.0",
-    "eslint-config-airbnb": "0.0.6",
+    "eslint": "^1.10.2",
+    "eslint-config-airbnb": "1.0.2",
     "mocha": "^2.2.5",
     "rimraf": "^2.4.3"
   }