button added in the header

smart-hut/src/components/HeaderController.js

@@ -59,9 +59,15 @@ export class MyHeader extends React.Component {
           <Grid columns="equal" divided inverted padded>
             <Grid.Row color="black" textAlign="center">
               <Grid.Column width={4} height={0.5}>
+              <Grid.Row>
                 <Segment color="black" inverted>
                   <IconHomeImage />
                 </Segment>
+              </Grid.Row>
+              <Divider />
+              <Grid.Row>
+                <Button > Similuation Panel </Button>
+              </Grid.Row>
               </Grid.Column>
               <Grid.Column>
                 <Segment color="black" inverted>
@@ -122,6 +128,7 @@ export class MyHeader extends React.Component {
                     textAlign: "center",
                   }}
                 >
+                <Divider />
                   <Checkbox
                     label={<label>Share cameras</label>}
                     checked={this.props.cameraEnabled}