add logo and mit badge (#25)

README.md

@@ -1,8 +1,11 @@
 ![codecov](https://img.shields.io/codecov/c/github/retr0h/go-gilt?token=clAMnFQCEQ&style=flat-square)
 [![go report card](https://goreportcard.com/badge/github.com/retr0h/go-gilt?style=flat-square)](https://goreportcard.com/report/github.com/retr0h/go-gilt)
+[![license](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](LICENSE)
 
 # Gilt
 
+<img src="asset/gilt.png" align="left" width=20% height=20%>
+
 Gilt is a tool which aims to make repo management, manageable.  Gilt
 clones repositories at a particular version, then overlays the repository to
 the provided destination.  An alternate approach to "vendoring".
@@ -12,6 +15,8 @@ directories from the specified repository to given destinations.  This is quite
 helpful for those using Ansible, since libraries, plugins, and playbooks are
 often shared, but Ansible's [Galaxy][] has no mechanism to handle this.
 
+<br clear="left"/>
+
 ## Port
 
 This project is a port of [Gilt][], it is
@@ -99,6 +104,11 @@ List helpful targets:
 
 The [MIT][] License.
 
+The logo is licensed under the [Creative Commons NoDerivatives 4.0 License][],
+and designed by [@nanotron][].
+
 [Galaxy]: https://docs.ansible.com/ansible/latest/reference_appendices/galaxy.html
 [Gilt]: http://gilt.readthedocs.io/en/latest/
 [MIT]: LICENSE
+[Creative Commons NoDerivatives 4.0 License]: https://creativecommons.org/licenses/by-nd/4.0/
+[@nanotron]: https://github.com/nanotron