Cleanup leanModal.js

Proper indentation
Use double-quotes instead of single-quotes
Extract open modal behavior into a separate function
Allow directly calling openModal on a modal element

This will allow developers to call the modal on document ready
Add way to open modal without clicking into documentation
Removed debugger
Synchronize class separators for modal elements

modal_close becomes modal-close
lean_overlay becomes lean-overlay
Merge branch 'feature/open-modal-without-clicking' of https://github.com/afifsohaili/materialize into afifsohaili-feature/open-modal-without-clicking
Merge branch 'feature/open-modal-without-clicking' of https://github.com/afifsohaili/materialize
compiled jade
Merge branch 'afifsohaili-feature/open-modal-without-clicking'
added more description to programatic modal open