Adds text property to tooltips and popovers

• #116 Text property

This release adds the ability to use tooltips and popovers in inline form by passing a text property with the content of the tooltip/popover instead of using a block template.

Instead of:

{{#my-component}}
  Hover for more info

  {{#tooltip-on-component}}
    Here is the info in a tooltip!
  {{/tooltip-on-component}}
{{/my-component}}

You can now write:

{{#my-component}}
  Hover for more info

  {{tooltip-on-component text='Here is more info in a tooltip!'}}
{{/my-component}}

Documentation is here.