Add docs for reloading workbooks during development

Prior to I2d3576d30fcae74ea692bd712a40264004d9b9d1 I used to copy
this from instack-undercloud, but since that now uses python it's
useful to have a reference of how to update all workbooks after
installing a locally built tripleo-common package.

Change-Id: I0eb53bcb63d3c8722d787f1f4a389a854860a623

README.rst

@@ -38,6 +38,26 @@ code to accomplish these tasks. ::
     # make sure the new actions got loaded
     mistral action-list | grep tripleo
 
+Workflow Development
+------------------
+
+
+When developing new workflows, you will need to reload the modified workflows,
+e.g the following will reload all the workflows from the default packaged
+location, or you can use a similar approach to replace only a single workbook
+while under development. ::
+
+    for workbook in $(openstack workbook list -f value -c Name | grep tripleo); do
+        openstack workbook delete $workbook
+    done
+    for workflow in $(openstack workflow list -f value -c Name | grep tripleo); do
+        openstack workflow delete $workflow
+    done
+    for workbook in $(ls /usr/share/openstack-tripleo-common/workbooks/*); do
+        openstack workbook create $workbook
+    done
+
+
 Validations
 -----------