Comply awesome rules

[Melevir]

Here are some todos from https://github.com/sindresorhus/awesome/blob/master/pull_request_template.md:

• integrate awesome-lint (add to make check, fix errors)
• make main title title cased (https://capitalizemytitle.com/)
• add relevant topics (at least awesome-list and awesome)
• add logo/illustration
• add awesome badge
• change licence to CC0
• add contribution guidelines and png badge
• remove Travis badge