Increase the default timeouts for CircleCI depoys.
Include the Gemfile.lock so that we know we're starting someplace that works.
Switch from 'bundle update' to 'bundle' because it's safer.

We want to increase the likelihood of success on that first run through. 'bundle' will use the same gems that have passed on CI, so they should work for the user too.
Include the required raygun version.

The raygun gem will check to make sure that it is new enough to process this application prototype by checking its version against that contained withing .raygun-version.