Stop bower from asking for statistics when installing

As was noted in a comment, this was raised as an issue at github. At the end of that issue there's reference to a minor note at the end of the CHANGELOG comments:

NOTE: It's advisable that users use --config.interactive=false on automated scripts.

You can create a ~/.bowerrc file, which is useful when using bower to install components in a Docker environment:

{
  "interactive": false
}

Another option is setting an environment variable (source):

export CI=true

It seems that you could use

bower --config.analytics=false install

to disable only Analytics question.

@see https://github.com/bower/bower/pull/1470