README magic and Makefile usage improvement

The new README.md in the master (and any other non-gh-pages) branch now
simply refers to the README.md in the gh-branch.

The installer generates a README for conveneience by checking out of
the gh-pages branch.

The makefile also prints out the currently set PROFILE now.
Shortened the example file filenames
New: added colorizing function `:util:markdown()'
Simplified the template module to a bare minimum

The demo code has all been moved into the new tutorial module.
New tutorial module

Enable the tutorial module by default.
... module/remote - usage string fix
Installation/Uninstallation work in the Makefiles