Update README.md

Fix another link to demo

Use rawgithub.com for quick demo rendering (it properly handles mime types)

Trying to fix htmlpreview.github.io demo's willingness to execute javascript

If a submenu is clicked, immediately activate it.

Make sure example page's overridden styles are more specific than vanilla boostrap's

Move example's submenu contents into HTML structure of menu itself so new exitMenu event fires at proper times in example.

Update README.md

Add submenuDirection option so menu-aim supports submenus that open to the left/right/above/below main menus.

Remove trailing comma

Add exitMenu callback option to be used when the mouse exits the whole menu entirely. Some users want submenus to disappear in this case, others do not. Added appropriate docs to README

Make menu-aim work when jQuery collection contains multiple elements

Added links to demo via htmlpreview.github.com

Add screenshot/notes about learning from example

Add screenshot of new example page