Revert "Merge pull request #34 from andyxlee/master"

This reverts commit 86266d0f6e84673254e64f7b9714be4be73ebe02, reversing
changes made to da0aa29e5df1deb5e82c3f22aa54cf347fbc289d.
Add popup delay option
Merge pull request #36 from BetterWorks/fix-tooltip-example

Fix tooltip example
Merge pull request #37 from BetterWorks/popup-delay

[#35] Add popup delay option
Add margin to nsPopover
Create nsPopover.min.css
Callback for dynamic placement of card.
Reorganizing project structure and fixing build setup.