macos: volumes in finder sidebar

osx/finder_volumes.markdown

+Add Volumes to Finder Sidebar
+=============================
+
+The `/Volumes/` folder on macOS contains all mounted file shares. If you need a quick access to connected groupshares, you can add this folder to the Finder sidebar on the left.
+
+  * With the Finder active, open the `Go` menu and select `Go to Folder...`
+  * Enter `/Volumes` in the dialog, then press Enter.
+
+[[!img /media/osx/finder_volumes_1.png size="450x"]]
+
+  * Drag-n-drop the Volumes folder to the Finder sidebar
+
+[[!img /media/osx/finder_volumes_2.png size="450x"]]