Print remembered options during bundle install

[rohitarondekar]

This originated in #2020

The format as suggested by André Arko

$ bundle install --without libv8 --path vendor/bundle
[...]

$ bundle
bundle install --without libv8 --path vendor/bundle
Using rake (0.9.2.2)

[rohitarondekar]

I'd like to combine the original suggestion with @indirect :

$ bundle install --without libv8 --path vendor/bundle
[...]

$ bundle
Using options from: path/to/config/file
    --without libv8 --path vendor/bundle

Using rake (0.9.2.2)

What do you think?

[xaviershay]

Closing, this is covered elsewhere.