Update binary to version 3.0.0. (#5)

Author: herloct

.travis.yml

@@ -8,7 +8,7 @@ matrix:
   fast_finish: true
   include:
     - env:
-      - PHPCS_VERSION=2.9.1
+      - PHPCS_VERSION=3.0.0
       - IS_LATEST=1
 
 before_script:

Dockerfile

@@ -2,7 +2,7 @@ FROM php:7.1.5-alpine
 
 MAINTAINER herloct <herloct@gmail.com>
 
-ENV PHPCS_VERSION=2.9.1
+ENV PHPCS_VERSION=3.0.0
 
 RUN curl -L https://github.com/squizlabs/PHP_CodeSniffer/releases/download/$PHPCS_VERSION/phpcs.phar > /usr/local/bin/phpcs \
     && chmod +x /usr/local/bin/phpcs \

README.md

@@ -3,7 +3,8 @@
 
 ## Supported tags and respective `Dockerfile` links
 
-* [`2.9.1`, `latest`](https://github.com/herloct/docker-phpcs/blob/2.9.1/Dockerfile)
+* [`3.0.0`, `latest`](https://github.com/herloct/docker-phpcs/blob/3.0.0/Dockerfile)
+* [`2.9.1`](https://github.com/herloct/docker-phpcs/blob/2.9.1/Dockerfile)
 * [`2.9.0`](https://github.com/herloct/docker-phpcs/blob/2.9.0/Dockerfile)
 * [`2.8.1`](https://github.com/herloct/docker-phpcs/blob/2.8.1/Dockerfile)
 * [`2.8.0`](https://github.com/herloct/docker-phpcs/blob/2.8.0/Dockerfile)