Added jekyll-rst plugin.

jekyll-rst plugin allows to use restructured text source files, which
are much convinient than plain markdown files, since reST format
supports ootb:

- tables
- definitions
- code highlight
- autogenerated table of content

and much more.

README.md

@@ -7,7 +7,8 @@ files accepted by [Jekyll](https://jekyllrb.com) static site generator.
 Build/serve
 -----------
 
-In order to build the site, you'll need Jekyll framework installed. Easiest way
+In order to build the site, you'll need Jekyll framework installed and
+[jekyll-rst](https://github.com/gryf/jekyll-rst) plugin. Easiest way
 to achieve it, is to install it from system repositories.
 
 If your distribution doesn't contain it (even in external ones, like PPA for
@@ -18,9 +19,14 @@ typical usage would be as follows:
 ```
 $ cd window-maker.github.io && bundler init
 $ bundler add jekyll
+$ mkdir _plugins
+$ git clone https://github.com/gryf/jekyll-rst _plugins/jekyll-rst
 $ bundler exec jekyll serve
 ```
 
+Consult [jekyll-rst](https://github.com/gryf/jekyll-rst) plugin documentation
+for requirements.
+
 which will initialize gemfile, add jekyll to it, and then perform `jekyll serve`
 which underneath will build the site and than run simple http server on
 `http://localhost:4000` in development mode. More about jekyll you can find [on

_config.yml

@@ -1 +1,3 @@
 title: Window Maker
+rst:
+  initial_header_level: 1