Improved documentation and tooling

.eslintrc.js

@@ -0,0 +1,36 @@
+module.exports = {
+  parser: 'babel-eslint',
+  plugins: [ 'flowtype' ],
+
+  env: {
+    browser: true,
+    commonjs: true,
+    es6: true,
+    jest: true,
+    node: true
+  },
+
+  parserOptions: {
+    ecmaVersion: 6,
+    sourceType: 'module',
+    ecmaFeatures: {
+      experimentalObjectRestSpread: true
+    }
+  },
+
+  extends: [
+    'plugin:flowtype/recommended',
+    'standard'
+  ],
+
+  rules: {
+    'object-curly-spacing': ['warn', 'always'],
+    'no-duplicate-imports': 'off',
+    'flowtype/no-weak-types': [0, {
+      'any': false,
+      'Object': false,
+      'Function': false
+    }]
+  }
+};
+

.gitignore

@@ -1,3 +1,3 @@
 lib/
+coverage/
 node_modules/
-