add example file

example.js

@@ -0,0 +1,17 @@
+'use strict';
+const chalk = require('./');
+
+// generates screenshot
+for (const key of Object.keys(chalk.styles)) {
+	let ret = key;
+
+	if (key === 'reset' || key === 'hidden' || key === 'grey') {
+		continue;
+	}
+
+	if (/^bg[^B]/.test(key)) {
+		ret = chalk.black(ret);
+	}
+
+	process.stdout.write(chalk[key](ret) + ' ');
+}

package.json

@@ -62,6 +62,9 @@
     "envs": [
       "node",
       "mocha"
+    ],
+    "ignores": [
+      "example.js"
     ]
   }
 }