$ cp extension/host/org.evergreen_ils.hatch.json ~/.config/chromium/NativeMessagingHosts/
-------------------------------------------------------------------------
+== Using Hatch ==
+
+* In Chrome, navigate to the browser staff URL (https://HOSTNAME/eg/staff/).
+* Chrome should display a browser action icon along the top right of the
+ browser window (just left of the settings menu) with a letter "H".
+ ** TODO: we can apply an icon of our choosing here during the install.
+* Clicking the "H" button should produce a security prompt, click through
+ to allow the requested permissions.
+* Reload the browser client login page.
+* Open the Javascript console. It should show messages like:
+
+[source,sh]
+-------------------------------------------------------------------------
+Loading Hatch relay content script
+...
+sending to Hatch: {"key":"eg.workstation.all","action":"get","msgid":1}
+Hatch responded to message ID 1
+-------------------------------------------------------------------------
+
+* See if Hatch is able to communicate with your printer... Navigate to
+ https://HOSTNAME/eg/staff/admin/workstation/print/config
+* The "Select Printer" drop-down should show your printer(s).
+* The various printer attribute selectors should show values supported
+ by the selected printer.
+