docs: added instructions for angular docs 5 Min Quickstart
docs: added instructions for angular docs 5 Min Quickstart

NathanWalker/ng2-dragula,valor-software/ng2-dragula,valor-software/ng2-dragula,annraoi/Drag-And-Drop-by-Dragula,annraoi/Drag-And-Drop-by-Dragula,aggo/ng2-dragula,NathanWalker/ng2-dragula,readelobdill/ng2-dragula,NathanWalker/ng2-dragula,aggo/ng2-dragula,valor-software/ng2-dragula