Switch from travis to circleci

Author: unixorn

.circleci/config.yml

@@ -0,0 +1,16 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/ruby
+
+    steps:
+      - checkout
+
+      - run:
+          name: Install awesome_bot
+          command: gem install awesome_bot
+
+      - run:
+          name: Check README.md
+          command: awesome_bot README.md --allow-dupe --allow-redirect --white-list https://github,https://img.shields.io

.travis.yml

@@ -1,7 +1,7 @@
 # git-extra-commands
 
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-[![Build Status](https://travis-ci.org/unixorn/git-extra-commands.svg?branch=master)](https://travis-ci.org/unixorn/git-extra-commands)
+[![CircleCI](https://circleci.com/gh/unixorn/git-extra-commands.svg?style=shield)](https://circleci.com/gh/unixorn/git-extra-commands)
 [![Code Climate](https://codeclimate.com/github/unixorn/git-extra-commands/badges/gpa.svg)](https://codeclimate.com/github/unixorn/git-extra-commands)
 [![Issue Count](https://codeclimate.com/github/unixorn/git-extra-commands/badges/issue_count.svg)](https://codeclimate.com/github/unixorn/git-extra-commands)
 [![GitHub stars](https://img.shields.io/github/stars/unixorn/git-extra-commands.svg)](https://github.com/unixorn/git-extra-commands/stargazers)