message: Add pkg mains.
diff: "version": "0.0.4",
  "description": "A naive React Graphql library",
  "main": "lib/index.js",
  + "module": "es/index.js",
  + "jsnext:main": "es/index.js",
  "scripts": {
  "clean-lib": "rimraf lib",
  "build-lib": "npm run clean-lib && BABEL_ENV=commonjs babel src -d lib --extensions \".ts,.tsx\"",
  