Markdown Viewer

Z 4 z 5 gwězdkow pógódnośony

wót Michael dnja Dec. 18, 2016 · trajny wótkaz

After install the plug-in, I drag a *.md file to the Firefox browser while the browser prompt a window to ask open the file with another application or "save as".
Is anything wrong about my operation?
Any help will be appreciate, Thanks!