Create directory on output

[atdiff]

Bug Report

When output the linting results to a file in a non-existent directory, an error occurs running this command:
tslint src/**/*.ts -t json -o newDirectory/results.json

• TSLint version: 5.11.0
• TypeScript version: 2.9.2
• Running TSLint via: CLI

Actual behavior

The following error occurs:

events.js:167
      throw er; // Unhandled 'error' event
      ^

Error: ENOENT: no such file or directory, open 'C:\newDirectory\results.json'
Emitted 'error' event at:
    at lazyFs.open (internal/fs/streams.js:273:12)
    at FSReqWrap.oncomplete (fs.js:141:20)

Expected behavior

I would expect the directory to be created automatically