Install asciidoc on ubuntu

How to install asciidoc on ubuntu
1. Go to terminal by ctrl+alt+t in ubuntu
2. Download asciidoc from here.
3. tar -xzf asciidoc-8.6.9.tar.gz
4. cd asciidoc-8.6.9
5. ./configure
6. sudo make install
7. sudo make doc

To uninstall
sudo make uninstall