message: Adds support for tracking help usage in telemetry. Closes
diff: @@ -8,6 +8,7 @@ import * as minimist from 'minimist';
  import * as os from 'os';
  import * as path from 'path';
  import { Logger } from '.';
  +import appInsights from '../appInsights';
  import Command, { CommandError } from '../Command';
  import config from '../config';
  import { settingsNames } from '../settingsNames';
  @@ -568,7 +569,10 @@ export class Cli {
  }
  private printHelp(exitCode: number = 0): void {
  + const properties: any = {};
  +
  if (this.commandToExecute) {
  + properties.command = this.commandToExecute.name;
  this.printCommandHelp();
  }
  else {
  @@ -577,9 +581,16 @@ export class Cli {
  Cli.log(`${packageJSON.description}`);
  Cli.log();
  + properties.command = 'commandList';
  this.printAvailableCommands();
  }
  + appInsights.trackEvent({
  + name: 'help',
  + properties
  + });
  + appInsights.flush();
  +
  process.exit(exitCode);
  }
  