Add ary

snippets/ary.md

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+### ary
+
+Creates a function that accepts up to `n` arguments, ignoring any additional arguments.
+
+Call the provided function, `fn`, with up to `n` arguments, using `Array.slice(0,n)` and the spread operator (`...`).
+
+```js
+const ary = (fn, n) => (...args) => fn(...args.slice(0, n));
+```
+
+```js
+const firstTwoMax = ary(Math.max, 2);
+[[2, 6, 'a'], [8, 4, 6], [10]].map(x => firstTwoMax(...x)); // [6, 8, 10]
+```