I'm updating the buttonText for 'today' in views and its not working.

Updating the buttonText for the other buttons works fine.

```
fullcalendar: {
    firstHour: 9,
    header: {
        left: 'prev,next today',
        center: 'title',
        right: 'listDay,listWeek,month,listMonth,'
    },
    slotMinutes: 30,
    theme:false,
    views: {
        today: {buttonText: 'Today'},
        listWeek: {buttonText: 'Week'},
        listDay: {buttonText: 'Day'},
        listMonth: {buttonText: 'List'},
        month: {buttonText: 'Month'}
    },
    defaultView: 'month'
},

```

'today' should be capitalized but its not...