Change the badge link and color

Author: Serge Lamikhov-Center

README.md

@@ -1,8 +1,8 @@
 # ELFIO
 
 [![Build](https://travis-ci.com/serge1/ELFIO.svg?branch=master)](https://travis-ci.com/serge1/ELFIO)
-[![Documentation](https://readthedocs.org/projects/coffi/badge)](http://elfio.sourceforge.net/elfio.pdf)
-[![License](https://img.shields.io/github/license/serge1/ELFIO)](https://github.com/serge1/ELFIO/blob/master/COPYING)
+[![Documentation](https://img.shields.io/badge/doc-download-brightgreen)](http://elfio.sourceforge.net/elfio.pdf)
+[![License](https://img.shields.io/badge/License-MIT-brightgreen.svg)](https://github.com/serge1/ELFIO/blob/master/COPYING)
 
 ELFIO is a header-only C++ library intended for reading and generating
 files in the ELF binary format. It is used as a standalone library - it is not