1.1.0: Added README and ToolbarSettings, so visibility of tools can be set in Preferences -> Module -> Toolbar

README.md

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+# Description
+
+This module contains a few helpful editor tools, like favorites, history and some handy toolbar tools.
+
+
+## Favorites
+
+An editor window, where you can pin folders and assets, so you can easily find the most used assets in your project.
+
+
+## History
+
+An editor window, where the history of all selected assets are shown. An asset in the window can be selected to easy get back to previous selections.
+
+
+## Toolbar
+
+Toolbars to the left and right of the play-buttons. Anything can be added, as long as it is supported by IMGUI.
+
+
+### Default tools
+
+Three tools are available from start:
+
+* UI Layer: Toggle the UI layer on/off
+* UI Canvas: Select and center the camera on any Canvases in the scene
+* Scene: Load any scene in the project easily by using the dropdown
+
+
+### Customization
+
+You can create your own toolbar extensions by extending `AbstractToolbarDrawer`.
+
+```
+internal sealed class MyCustomTool : AbstractToolbarDrawer
+{
+    public override bool Visible => true;
+    public override bool Enabled => true;
+    public override EToolbarPlacement Placement => EToolbarPlacement.Left;
+    public override int Priority => (int)EToolbarPriority.Medium;
+
+    protected override void Draw(Rect rect)
+    {
+        // Use IMGUI methods for drawing
+    }
+
+    public override float CalculateWidth()
+    {
+        // Default height for toolbar buttons is 30
+        return 30.0f;
+    }
+}
+```
+
+The four properties help define draw and enable state:
+
+* `Visible`: If it is visible in the toolbar
+* `Enabled`: If it is enabled in the toolbar (`GUI.enabled`)
+* `Placement`: If it is placed to the left or right of the play-buttons
+* `Priority`: Sort order/priority, when drawing the tool