Install Gradle with gradle binaries

Download gradle-1.10-bin.zip distribution from gradle web site, add /path/to/gradle-1.10/bin to PATH environment variable. Don't use Gradle Wrapper.
What markdown editor do you use?   I am using emacs with "markdown-mode" on.  This tells me (with color) when a piece of code will appear as <code> in the generated html.   I see some parts of the document that you intend to be code but are not.   I have fixed these when I saw them but in the future you should verify that your html is generated correctly.