add eslint integration and clean up most files

Author: ened

.eslintrc

@@ -0,0 +1,26 @@
+{
+  "ecmaFeatures": {
+    "jsx": true,
+    "modules": true
+  },
+  "env": {
+    "browser": true,
+    "node": true
+  },
+  "parser": "babel-eslint",
+  "rules": {
+    "no-undef": 2,
+    "semi": [2, "always"],
+    "quotes": [2, "double"],
+    "strict": [2, "never"],
+    "react/jsx-uses-react": 2,
+    "react/jsx-uses-vars": 2
+  },
+  "plugins": [
+    "react"
+  ],
+  "globals": {
+    "expect": true
+  }
+}
+