Merge pull request quri#56 from torarvid/remove-includes

Remove usage of experimental 'includes' function

Author: chollier

src/DateTimeField.jsx

@@ -97,8 +97,8 @@ DateTimeField = React.createClass({
  var target = e.target;
  if (target.className && !target.className.match(/disabled/g)) {
  var month;
- if(target.className.includes("new")) month = this.state.viewDate.month() + 1;
- else if(target.className.includes("old")) month = this.state.viewDate.month() - 1;
+ if(target.className.indexOf("new") >= 0) month = this.state.viewDate.month() + 1;
+ else if(target.className.indexOf("old") >= 0) month = this.state.viewDate.month() - 1;
  else month = this.state.viewDate.month();
  return this.setState({
  selectedDate: this.state.viewDate.clone().month(month).date(parseInt(e.target.innerHTML)).hour(this.state.selectedDate.hours()).minute(this.state.selectedDate.minutes())