Add "Power" kata

Author: juanantonioledesma

8-kyu/power.md

@@ -0,0 +1,35 @@
+<h1>Power <sup><sup>8 Kyu</sup></sup></h1>
+
+<sup>
+  <a href="https://www.codewars.com/kata/562926c855ca9fdc4800005b">
+    <strong>LINK TO THE KATA</strong>
+  </a> - <code>RESTRICTED</code>
+</sup>
+
+## Description
+
+The goal is to create a function of two inputs `number` and `power`, that "raises" the `number` up to `power` (ie multiplies `number` by itself `power` times).
+
+**Examples**
+
+```
+numberToPower(3, 2)  // -> 9 ( = 3 * 3 )
+numberToPower(2, 3)  // -> 8 ( = 2 * 2 * 2 )
+numberToPower(10, 6) // -> 1000000
+```
+
+**Note:** `Math.pow` and some other `Math` functions like eval() and `**` are disabled.
+
+## Solution
+
+```javascript
+const numberToPower = (number, power) => {
+  let result = 1
+
+  for (let i = 0; i < power; i++) {
+    result *= number
+  }
+
+  return result
+}
+```

README.md

@@ -72,3 +72,4 @@ JavaScript katas on Codewars are programming challenges that help you improve yo
 - **[Multiply](./8-kyu/multiply.md)**
 - **[Object Oriented Piracy](./8-kyu/object-oriented-piracy.md)**
 - **[Opposites Attract](./8-kyu/opposites-attract.md)**
+- **[Power](./8-kyu/power.md)**