Add log knowledge badge

Author: anatoliykmetyuk

Diff for: README.md

@@ -2,6 +2,7 @@ Dotty
 =====
 [![Build Status](http://dotty-ci.epfl.ch/api/badges/lampepfl/dotty/status.svg)](http://dotty-ci.epfl.ch/lampepfl/dotty)
 [![Join the chat at https://gitter.im/lampepfl/dotty](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/lampepfl/dotty?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Log Knowledge](https://img.shields.io/badge/log-knowledge-blueviolet.svg)](https://github.com/lampepfl/dotty-knowledge/issues/new/choose)
 
 * [Homepage](http://dotty.epfl.ch)
 * [Documentation](http://dotty.epfl.ch/docs)
@@ -25,7 +26,7 @@ How to Contribute
 ## Contribute Internals-related Knowledge
 If you know anything useful at all about Dotty, feel free to log this knowledge:
 
-- [📜Log the Knowledge](https://github.com/lampepfl/dotty-knowledge/issues/new)
+- [📜Log the Knowledge](https://img.shields.io/badge/log-knowledge-blueviolet.svg)](https://github.com/lampepfl/dotty-knowledge/issues/new/choose)
 - [🎓More about Logging the Knowledge](https://github.com/lampepfl/dotty-knowledge/blob/master/README.md)
 
 In short, no need to make it pretty, particularly human-readable or give it a particular structure. Just dump the knowledge you have and we'll take it from there.