Update README

README.md

@@ -4,6 +4,13 @@
 
 This library is intended to be used for populating device types in [NetBox](https://github.com/netbox-community/netbox). It contains a set of device type definitions expressed in YAML and arranged by manufacturer. Each file represents a discrete physical device type (e.g. make and model). These definitions can be loaded into NetBox to obviate the need to create device types and their associated components manually.
 
+# Guidelines for Defining Device Types
+
+* Every unique model number requires a discrete definition file, even if the set of components is identical.
+* Include only components which are fixed to the chassis. Optional modular components should be omitted from the definition.
+* Name components as they appear in the device's operating system (as opposed to the physical chassis label, if different).
+* Avoid encapulating YAML values in quotes unless necessary to avoid a syntax error.
+
 # Device Type Definitions
 
 Each definition must include at minimum the following fields:
@@ -17,39 +24,44 @@ The following fields may optionally be declared:
 * `part_number`: An alternative representation of the model number (e.g. a SKU).
 * `u_height`: The height of the device type in rack units. (Default: 1)
 * `is_full_depth`: A boolean which indicates whether the device type consumes both the front and rear rack faces. (Default: true)
-* `comments`: Free-form comments concerning the device type. These must be universally applicable to the specific device type.
+* `subdevice_role`: Indicicates that this is a `parent` or `child` device. (Default: None)
 
 ## Component Definitions
 
 Valid component types are listed below. Each type of component must declare a list of the individual component templates to be added.
 
-* `console_ports`
-* `console_server_ports`
-* `power_ports`
-* `power_outlets`
+* `console-ports`
+* `console-server-ports`
+* `power-ports`
+* `power-outlets`
 * `interfaces`
-* `rear_ports`
-* `front_ports`
+* `rear-ports`
+* `front-ports`
+* `device-bays`
 
 The available fields for each type of component are listed below.
 
 ### Console Ports
 
 * `name`: Port name
+* `type`: Port type
 
 ### Console Server Ports
 
 * `name`: Port name
+* `type`: Port type
 
 ### Power Ports
 
 * `name`: Port name
+* `type`: Port type
 * `maximum_draw`: The port's maximum power draw, in watts (optional)
 * `allocated_draw`: The port's allocated power draw, in watts (optional)
 
-### Power Outlers
+### Power Outlets
 
 * `name`: Outlet name
+* `type`: Port type
 * `power_port`: The name of the power port on the device which powers this outlet (optional)
 * `feed_leg`: The phase (leg) of power to which this outlet is mapped (optional)
 
@@ -59,12 +71,6 @@ The available fields for each type of component are listed below.
 * `type`: Inteface type
 * `mgmt_only`: A boolean which indicates whether this interface is used for management purposes only (default: false)
 
-### Rear Ports
-
-* `name`: Port name
-* `type`: Port type
-* `positions`: The number of front ports that can map to this rear port (default: 1)
-
 ### Front Ports
 
 * `name`: Port name
@@ -72,3 +78,13 @@ The available fields for each type of component are listed below.
 * `rear_port`: The name of the rear port on this device to which the front port maps
 * `rear_port_position`: The corresponding position on the mapped rear port (default: 1)
 
+### Rear Ports
+
+* `name`: Port name
+* `type`: Port type
+* `positions`: The number of front ports that can map to this rear port (default: 1)
+
+### Device Bays
+
+* `name`: Bay name
+