update readme

Author: Septias

README.md

@@ -17,7 +17,13 @@ This allows you to simulate multiple users using the same application.
 
 You can install the tool globally. This works with any webxdc project:
 
-```shell
+```shell<SidebarButton
+            label="Close"
+            icon={<IoCaretBackOutline size={22} color="#000000" />}
+            onClick={() => {}}
+            right="15px"
+            bottom="0px"
+          />
 npm install -g webxdc-dev
 ```
 
@@ -41,7 +47,10 @@ to see full information. You can also filter messages. There is also a "chat"
 tab which you can use to see `info` contained in updates as well as any
 `summary` text contained in an update.
 
-You can collapse and expand the sidebar with the arrow.
+The sidebar can be closed with the `x` button within the sidebar and expanded 
+by clicking on the `<` button which is enabled when the sidebar is closed.
+The sidebars width can also be adjusted by moving the separating line between
+devices and sidebar.
 
 Each instance header also contains additional information: the port number on
 which the instance was opened, the amount of updates this instance sent and