Update query history README (#7164)

* Update query history README

* Fix typos

build/gulpfile.hygiene.js

@@ -158,6 +158,7 @@ const copyrightFilter = [
 	'!extensions/notebook/src/prompts/**',
 	'!extensions/mssql/src/prompts/**',
 	'!extensions/notebook/resources/jupyter_config/**',
+	'!extensions/query-history/images/**',
 	'!**/*.gif',
 	'!**/*.xlf',
 	'!**/*.dacpac',

extensions/query-history/README.md

@@ -2,6 +2,40 @@
 
 Adds a Query History panel for viewing and running past executed queries.
 
+### How do I view the history?
+
+Query History is displayed as a tab in the tab panel, which is toggled by the *View: Toggle Panel* command.
+
+![Query History tab](https://github.com/microsoft/azuredatastudio/tree/master/extensions/query-history/images/QueryHistoryTab.png)
+
+Initially this view will be empty but once you execute a query editor that will be captured in the window - with a separate row displayed for every query executed.
+
+![Query History tab with queries](https://github.com/microsoft/azuredatastudio/tree/master/extensions/query-history/images/QueryHistoryTabWithQueries.png)
+
+Each row consists of 3 parts :
+	1. Status icon : This will be a ✔️ if the query executed successfully. If any errors occurred a ❌is shown.
+	2. Query Text : This is the text of the query that was executed
+	3. Connection Info : The Server and Database the query was executed against
+	4. Timestamp : The date and time the query was executed
+
+### Query History row actions
+
+Right clicking on a history row will bring up a menu with a number of actions available.
+
+![Query History action menu](https://github.com/microsoft/azuredatastudio/tree/master/extensions/query-history/images/QueryHistoryActionMenu.png)
+
+#### Open Query
+
+This will open a new query editor window populated with the query text from the query executed and using the connection of that query.
+
+#### Run Query
+
+This will do the same thing as Open Query but will additionally run the statement immediately.
+
+#### Delete
+
+This will permanently delete the row from the view.
+
 ## Code of Conduct
 This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.