Falis right away with errors … awful !!

As soon as you install, give the following error on the dashboard:

The plugin generated 2 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.
Warning: Cannot modify header information – headers already sent by (output started at /Users/shourav/Documents/boot-sass/wp-content/plugins/responsive-video-ultimate/inc/enable_shortcode_widgets.php:2) in /Users/shourav/Documents/boot-sass/wp-admin/post.php on line 236

As soon as you try to save your first post with your video, this happens:

Warning: Cannot modify header information – headers already sent by (output started at /Users/shourav/Documents/boot-sass/wp-content/plugins/responsive-video-ultimate/inc/enable_shortcode_widgets.php:2) in /Users/shourav/Documents/boot-sass/wp-includes/pluggable.php on line 1196