Added link to yarn (#1)

0xnoob · web-flow · commit db67a8351dcd · 2019-06-10T01:51:12.000+02:00
diff --git a/src/documentation/0016-npm/index.md b/src/documentation/0016-npm/index.md
@@ -15,7 +15,7 @@ It started as a way to download and manage dependencies of Node.js packages, but
 
 There are many things that `npm` does.
 
-> Yarn is an alternative to npm. Make sure you check it out as well.
+> [**Yarn**](https://yarnpkg.com/en/) is an alternative to npm. Make sure you check it out as well.
 
 ## Downloads
 
