Asciidoc support

[roman-yagodin]

• [x] Support rendering blog posts in AsciiDoc
• [x] Syntax highlighting
• [ ] Note/Warning/Danger icons support

Links:

• https://github.com/asciidoctor/jekyll-asciidoc
• https://yermilov.github.io/blog/2017/02/20/using-jekyll-asciidoctor-and-github-pages-for-static-site-creation/

[roman-yagodin]

Blog source moved to master-src branch, Travis CI is used to automate build and push generated site to the master branch.