Added comments and decorators for existing create models

ref #13

src/models/creation/CreateRunnerOrganisation.ts

@@ -1,10 +1,17 @@
-import { IsString } from 'class-validator';
+import { IsNotEmpty, IsString } from 'class-validator';
 import { RunnerOrganisation } from '../entities/RunnerOrganisation';
 
 export class CreateRunnerOrganisation {
+    /**
+     * The Organisation's name.
+     */
     @IsString()
+    @IsNotEmpty()
     name: string;
 
+    /**
+     * Creates a RunnerOrganisation entity from this.
+     */
     public async toRunnerOrganisation(): Promise<RunnerOrganisation> {
         let newRunnerOrganisation: RunnerOrganisation = new RunnerOrganisation();