add gcode documentation

README.md

@@ -1,4 +1,24 @@
 gcode
 =====
 
-Jekyll theme used in my blog (http://gotchacode.com)
+gCode is a jekyll theme for tech blogs. It is clean and simple with good semantic
+structure.
+
+![gcode image](https://i.cloudup.com/haO7k4fzYk.gif)
+
+## Usage:
+
+- Install Jekyll from here(http://jekyllrb.com/)
+- Fork the project.
+- Change the fields in _config.yml
+- Change the links in header.html.s
+
+Test the website live while editing the code:
+
+```sh
+jekyll server --watch
+```
+
+## Issues:
+
+Report issues or feature request [here](https://github.com/vinitkumar/gcode/issues).