Updated ESLint configuration to better match project's code style

Author: shooter0106

.eslintrc.json

@@ -4,7 +4,10 @@
   "commonjs": true,
   "es6": true
  },
- "extends": "eslint:recommended",
+ "extends": [
+  "eslint:recommended",
+  "plugin:react/recommended"
+ ],
  "globals": {
   "Atomics": "readonly",
   "SharedArrayBuffer": "readonly"
@@ -13,8 +16,8 @@
   "ecmaVersion": 2018
  },
  "rules": {
-  "indent": ["error", "tab"],
-  "linebreak-style": ["error", "windows"],
+  "indent": ["error", 2],
+  "linebreak-style": ["error", "unix"],
   "quotes": ["error", "single"],
   "semi": ["error", "always"]
  }