Updating .gitignore

Ignoring Pants's byproduct files.

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If you use Git, we recommend adding these lines to your top-level .gitignore file:

.gitignore

# Pants workspace files
/.pants.d/
/dist/
/.pids
/.pants.workdir.file_lock*

FYI: your .gitignore is used to auto-populate the option pants_ignore

The pants_ignore option tells Pants which files to avoid looking at. Occasionally, you will want to ignore something with Git, but still want Pants to work on the file. See Troubleshooting / common issues for how to do this.