Feature Request: Export all the constants

[ghost]

Expected behaviour

All the constants would be exported.

Actual behaviour

Only the VERSION constant is exported in the index.html

Environment Details

• Karma version 1.3.0

Reasoning

We use gulp and we want to specify the log level via the Server constructor but it would be more reliable to use the constants defined inside karma than magic string like 'DEBUG'

[ghost]

This should be a trivial change. I'm more than willing to do a pull request

[dignifiedquire]

Sure :) PR welcome.