Initial vue-form-wizard release

Vue tab wizard was created due to the lack of any good form wizard component in the Vue community.
The component aims to make form wizards fun and easy to handle and customize

Features

• 3 form wizard layouts: circle, square and tabs Readme
• Specify the starting step (useful in case you want to save the form-wizard state)
• Pre-validate your tab before switching/going to the next tab before-change prop demo
• Customize title and buttons text
• Customize title and buttons with named slots example