gtk-youtube-viewer: added the `youtube_viewer_args` config-option, which allows passing command-line arguments to the instance of CLI youtube-viewer which is executed by gtk-youtube-viewer. (it may also be useful for #122)
gtk-youtube-viewer: added the `youtube_viewer_args` config-option, which allows passing command-line arguments to the instance of CLI youtube-viewer which is executed by gtk-youtube-viewer. (it may also be useful for #122)

Example:
	youtube_viewer_args => ['--player=vlc'],

will add the argument `--player=vlc` to youtube-viewer whenever an instance of youtube-viewer is started.

trizen/youtube-viewer,trizen/youtube-viewer