runs `git status' when you switch to the git root directory.
set font-lock-string-face.
add yard-mode(#5 #6).
update ruby-electric.el and ruby-mode.el.
Merge branch 'feature/7_update_emacs_packages' into develop
adds .ssh/config.
Merge branch 'feature/8_keep_my_ssh_connection_alive' into develop
fixed #9
Merge branch 'release/0.0.1'