Update docker layers

Author: jaymoulin

README.md

@@ -2,6 +2,8 @@ Google Closure Compiler API - Docker Image
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 [![latest release](https://img.shields.io/github/release/femtopixel/docker-google-closure-compiler-api.svg "latest release")](http://github.com/femtopixel/docker-google-closure-compiler-api/releases)
+[![Docker Pulls](https://img.shields.io/docker/pulls/femtopixel/google-closure-compiler.svg)](https://hub.docker.com/r/femtopixel/google-closure-compiler/)
+[![Docker Pulls](https://img.shields.io/docker/pulls/femtopixel/google-closure-compiler-app.svg)](https://hub.docker.com/r/femtopixel/google-closure-compiler-app/)
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