fork-to-sign contributor licensing agreement for all pull-request-driven projects

Users fork this repo under their own accounts. The original project repository is https://github.com/singlecla/singlecla.

You can:

• Read the terms for yourself. If something doesn't make sense, that's the terms' fault, not yours.

• Sign the CLA, using Git, a text editor, and your GitHub or other Git hosting account.

• Review a checklist for responsible PRs to others' projects.

• Help improve these terms and tools, by opening issues and pull requests on singlecla/singlecla.

1. Have a look through the terms. They were written to be read. And understood.

2. Fork https://github.com/singlecla/singlecla to your personal GitHub account.

3. Make a commit signing cla.md by replacing {{{name}}} with your full legal name. The result will look like:

   ## Signature
   
   Signed: /Ada Lovelace/

4. Push your new commit to your forked repository so the page at https://github.com/{you}/singlecla/blob/main/cla.md shows your signature.

You can verify that you or someone else has a valid, signed Single CLA using a provided script.