title: Disable specific days in material ui calendar in React
body: <p>I am using material-ui v0.20.0 for React js 
  This is my DatePicker component </p>
  
  <pre><code>&lt;Field
      name='appointmentDate'
      label="Select Date"
      component={this.renderDatePicker}
  /&gt;
  
  renderDatePicker = ({ input, label, meta: { touched, error }, ...custom,props }) =&gt; {
      return (
          &lt;DatePicker 
            {...input} 
            {...custom} 
            autoOk={true} 
            floatingLabelText={label}
            dateForm='MM/DD/YYYY' 
            shouldDisableDate={this.disabledDate}
            minDate={ new Date()}
            value={ input.value !== '' ? input.value : null }
            onChange={(event, value) =&gt; input.onChange(value)} 
          /&gt;
      );
  };
  </code></pre>
  
  <p>What should I write in disabledDate(){...} if I want to disable any of the day/s ?</p>