fix typo in cli.py
rename rtcodes to exitcodes
write exit codes in exceptions
fix typo in serve.py
add default disqus config to rux
new version 0.3.6
add link to config
update submodule default theme
use links for examples
Merge branch 'dev'

* dev:
  use links for examples
  update submodule default theme
  add link to config
  new version 0.3.6
  add default disqus config to rux
  fix typo in serve.py
  write exit codes in exceptions
  rename rtcodes to exitcodes
  fix typo in cli.py