Code cleanup. Added comments.

src/Models/DeviceSetupItem.ts

@@ -4,6 +4,9 @@ export interface IDeviceSetupItemProps {
     input: string
 }
 
+/**
+ * Data model to hold device setup items.
+ */
 export class DeviceSetupItem {
     private _deviceId: string = "";
     private _input: string = "";

src/Models/Matrix.ts

@@ -14,6 +14,9 @@ export interface Output {
     outputDevice: string,
 }
 
+/**
+ * Data model to hold matrix information.
+ */
 export class Matrix {
     private _inputs: Array<Input> = [];
     private _outputs: Array<Output> = [];