Foundation version of the tabs directive.

### Settings ###

#### `<tabset>` ####

 * `vertical`
 	_(Defaults: false)_ :
 	Whether tabs appear vertically stacked.

#### `<tab>` ####

 * `heading` or `<tab-heading>`
 	:
 	Heading text or HTML markup.

 * `active` <i class="fa fa-eye"></i>
 	_(Defaults: false)_ :
 	Whether tab is currently selected.

 * `select()`
 	_(Defaults: null)_ :
 	An optional expression called when tab is activated.

Foundation version of the tabs directive.

### Settings ###

#### `<tabset>` ####

 * `vertical`
 	_(Defaults: false)_ :
 	Whether tabs appear vertically stacked.

 * `open-first-tab`
  _(Defaults: true)_ :
  Whether open the first tab automatically.

#### `<tab>` ####

 * `heading` or `<tab-heading>`
 	:
 	Heading text or HTML markup.

 * `active` <i class="fa fa-eye"></i>
 	_(Defaults: false)_ :
 	Whether tab is currently selected.

 * `select()`
 	_(Defaults: null)_ :
 	An optional expression called when tab is activated.

Update docs for tabs due to open-first-tab option
chore(docs): Update docs for tabs due to open-first-tab option
