message: Fix badge markdown in README.md
diff: <img width="880" height = "80" alt = "Beast"
  src="https://raw.githubusercontent.com/vinniefalco/Beast/master/doc/images/readme.png">
  -[![Join the chat at https://gitter.im/vinniefalco/Beast](https://badges.gitter.im/vinniefalco/Beast.svg)](https://gitter.im/vinniefalco/Beast?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Build Status]
  -(https://travis-ci.org/vinniefalco/Beast.svg?branch=master)](https://travis-ci.org/vinniefalco/Beast) [![codecov]
  -(https://codecov.io/gh/vinniefalco/Beast/branch/master/graph/badge.svg)](https://codecov.io/gh/vinniefalco/Beast) [![coveralls]
  -(https://coveralls.io/repos/github/vinniefalco/Beast/badge.svg?branch=master)](https://coveralls.io/github/vinniefalco/Beast?branch=master) [![Documentation]
  -(https://img.shields.io/badge/documentation-master-brightgreen.svg)](http://vinniefalco.github.io/beast/) [![License]
  -(https://img.shields.io/badge/license-boost-brightgreen.svg)](LICENSE_1_0.txt)
  +[![Join the chat at https://gitter.im/vinniefalco/Beast](https://badges.gitter.im/vinniefalco/Beast.svg)](https://gitter.im/vinniefalco/Beast?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [![Build Status](https://travis-ci.org/vinniefalco/Beast.svg?branch=master)](https://travis-ci.org/vinniefalco/Beast) [![codecov](https://codecov.io/gh/vinniefalco/Beast/branch/master/graph/badge.svg)](https://codecov.io/gh/vinniefalco/Beast) [![coveralls](https://coveralls.io/repos/github/vinniefalco/Beast/badge.svg?branch=master)](https://coveralls.io/github/vinniefalco/Beast?branch=master) [![Documentation](https://img.shields.io/badge/documentation-master-brightgreen.svg)](http://vinniefalco.github.io/beast/) [![License](https://img.shields.io/badge/license-boost-brightgreen.svg)](LICENSE_1_0.txt)
  # HTTP and WebSocket built on Boost.Asio in C++11
  