Merge pull request #15 from CodinCat/patch-1

Add link to the term "PWA"

Author: yyx990803

README.md

@@ -1,6 +1,6 @@
 # vue-pwa-boilerplate
 
-> A full-featured PWA template with webpack, hot-reload, lint-on-save, unit testing & css extraction.
+> A full-featured [PWA](https://developers.google.com/web/progressive-web-apps/) template with webpack, hot-reload, lint-on-save, unit testing & css extraction.
 
 ## Documentation