add gitconfig example
add gitconfig example

GeoffreyPlichard/Realtime-Markdown-Viewer,justotest/test-tp,justotest/test-tp,sabativi/Realtime-Markdown-Viewer,Elephorm-tp-git/Realtime-Markdown-Viewer,sabativi/Realtime-Markdown-Viewer,ahmed-rachid/Realtime-Markdown-Viewer,ahmed-rachid/Realtime-Markdown-Viewer,GeoffreyPlichard/Realtime-Markdown-Viewer,Elephorm-tp-git/Realtime-Markdown-Viewer