Merge pull request #865 from MKrupauskas/master

add filterFalsy snippet, tags, and tests

snippets/filterFalsy.md

@@ -0,0 +1,13 @@
+### filterFalsy
+
+Filters out the falsy values in an array.
+
+Use `Array.prototype.filter()` to get an array containing only truthy values.
+
+```js
+const filterFalsy = arr => arr.filter(Boolean);
+```
+
+```js
+filterFalsy(['', true, {}, false, 'sample', 1, 0]); // [true, {}, 'sample', 1]
+```