ng new --skip-git/--skipGit should not skip creating .gitignore file

Versions

Angular CLI: 1.5.3                                           @angular/cli: 1.5.3
Node: 8.9.1                                                  @angular-devkit/build-optimizer: 0.0.33
OS: win32 x64                                                @angular-devkit/core: 0.0.21
Angular: 5.0.3                                               @angular-devkit/schematics: 0.0.37
... animations, common, compiler, compiler-cli, core, forms  @ngtools/json-schema: 1.1.0
... http, language-service, platform-browser                 @ngtools/webpack: 1.8.3
... platform-browser-dynamic, router                         @schematics/angular: 0.1.7
                                                             typescript: 2.4.2
Windows 10 x64                                               webpack: 3.8.1

Repro steps

1. Use ng new --skip-git to create a new project without a Git repository.
2. Open the project folder and look for .gitignore file.

Observed behavior

The .gitignore file does not exist.

Desired behavior

What would like to see implemented?

The .gitignore file should be generated and added to the project.

What is the use case?

• Project may be part of a larger project that already has a Git repository.
• Project may have a Git repository initialized later.

What did you expect to see?

The .gitignore file exists.

Mention any other details that might be useful (optional)

A .gitignore file is still very useful even if no Git repository was initialized. This is because the project may be part of a larger project which already has a Git repository or uses another gitignore-aware VCS. Or a Git repository may be added to the project later. In either case, you do not want all the build files, modules, IDE files, e2e files and whatnot to be checked in to the repository.

For anyone that may never use Git with the project, the .gitignore file is just a small harmless additional file in the project, so it’s not an issue there.

Relates to #4854

[Executus]

Here’s another use case using VSTS (Visual Studio Online):

1. Create empty git project in VSTS
2. Clone git project on client
3. Create angular app with --skip-git flag, as we don’t want to init a new repo. However we still want the gitignore.

[NeeLonGithub]

I expect --skip-git to skip the git processes (init and first commit). In my case I just don’t want the first commit to be done with my global settings, so I want to skip the git processes and do them myself later. For an option that expects the project to be oblivious of git and therefore not even create a .gitignore, I would expect --no-git or something similar.