added 'shell' command to bash-completion

[yannayl]

updated the bash shell auto-completion to complete the 'rebar shell' command

[ghost]

Thanks.

Please:

1. Change the commit message according to CONTRIBUTING#writing-commit-messages: added -> Add, updated -> Update, and terminate the description (not the summary) with a period.
2. Append your name in THANKS

Also, if you want to, you can add the missing entry in the zsh completion script as well.

[yannayl]

Welcome.

1. Done (commit amend).
2. Will be done when I contribute something a little bit more significant :-)

Sorry, but I am not zsh user and don't understand the syntax of the completion file (I tried, but don't have time to study it right now).

[ghost]

Thanks, but since the rewritten commit description just duplicates the summary, you can omit that or restore the previous text. As there's no explanation required, I'd say omit the description.

Here's the zsh patch: #453.

[yannayl]

ok.

I merged your patch into mine and committed again.

[ghost]

+1