message: added final steps to signing-commits.md
diff: @@ -33,8 +33,13 @@ Below we have made a simple walkthrough to do this, with links to Github's docum
  - add the key to your local installation of git: `git config --global user.signingkey <key-id>`
  - To add your GPG key to your bash profile, paste the text below:
  `echo 'export GPG_TTY=$(tty)' >> ~/.bashrc`
  + - [optional] To configure your Git client to sign commits by default for a local repository, run `git config commit.gpgsign true`.
  + - [optional] To sign all commits by default in any local repository on your computer, run `git config --global commit.gpgsign true`.
  +* Sign your commits
  + - `$ git commit -S -m your commit message`
  +
  [Github - Signing Commits with GPG](https://help.github.com/articles/signing-commits-with-gpg/)
  