Bump Smoke to Edge

We need to bump smoke for two changes that are impacting some users repos:

1. Better handling of inner controller classes (couple repos I know of are impacted by this)
1. More robust handling of filenames so that repos do not blow up during reporting phase

Initially I tried just including these two as patches, but was running into trouble, so just decided to go all the way to edge. There are some what Justin calls "breaking changes", which he said should be reflected in the 2.0 roadmap: https://github.com/presidentbeef/brakeman/wiki/Roadmap#20

It's not clear to me that any of those are actually breaking changes (for us). We did have to remove the "--relative-path" option (since it's now the default), but other than that, it seemed to work ok.

Would be great to bump this soon as at least 1 guy has been waiting for some time to get his repo parsing correctly.