v2.0.0-beta.1

Merge pull request #5 from coreui/dev-v2-beta-1

HeaderDropdown refactor

v2.0.0-beta.0

Merge pull request #3 from coreui/fix-ps-overflow

fix(sidebar) ps position issue

closes #2

v2.0.0-alpha.0

initial release of CoreUI-Vue v2 component library