Merge pull request #242 from fejes713/master

Add countVowels

snippets/countVowels.md

@@ -0,0 +1,11 @@
+### countVowels
+
+Retuns `number` of vowels in provided string.
+
+Use a regular expression to count number of vowels `(A, E, I, O, U)` in a `string`.
+
+```js
+const countVowels = str => (str.match(/[aeiou]/ig) || []).length;
+// countVowels('foobar') -> 3
+// countVowels('gym') -> 0
+```