Update dev dependencies, add ESLint

.eslintrc

@@ -0,0 +1,24 @@
+{
+  "extends": [
+    "airbnb",
+    "prettier"
+  ],
+  "env": {
+    "es6": true,
+    "node": true,
+    "jest": true
+  },
+  "rules": {
+    "prettier/prettier": [
+      "error",
+      {
+        "trailingComma": "none",
+        "singleQuote": true,
+        "printWidth": 120
+      }
+    ]
+  },
+  "plugins": [
+    "prettier"
+  ]
+}

README.md

@@ -1,4 +1,4 @@
-# GitHub Action -- Releases API
+# GitHub Action - Releases API
 This GitHub Action (written in JavaScript) wraps the [GitHub Release API](https://developer.github.com/v3/repos/releases/), specifically the [Create a Release](https://developer.github.com/v3/repos/releases/#create-a-release) endpoint, to allow you to leverage GitHub Actions to create releases.
 
 <a href="https://github.com/actions/create-release"><img alt="GitHub Actions status" src="https://github.com/actions/create-release/workflows/Create%20Release/badge.svg"></a>