Custom disabled dates in daterangepicker

Add disabled dates in your daterangepicker, e.g. for displaying already booking dates. At the bottom of examples.html i've included and example of this functionality.

#### Options
__disabledDates__
* String or array; defaults to false
* One or more dates that will be disabled in the daterangepicker. Array should be a simple list of dates. Format is the same as _format_ option.

__disbaledClass__
* String; defaults to empty string
* Class will be added to each date in _disabledDates_ option. Will be appened to default _off_ and _disabled_ classes.

__disabledInRange__
* Boolean; defaults to true
* Allow or deny disabled dates in the range. If denied, daterangepicker automatically corrects dates when input is changed. Allows by default.

#### Notes
My editor accidentally removed all trailing spaces in README.MD in commit _5e72fcc_.  I only intended to add line 51.