[FIX] Base path from JAR

This fix updates the regex to take into account the different path structure when the app is packaged as a jar. The regex now captures the path from the following two formats:

```bash

"file:/path/to/my/test.jar!/internal/path/for/gem/file.rb:5:in `Views'"
"~/.gem/jruby/1.9.3/gems/pry-0.9.12.6-java/lib/pry/pry_instance.rb:328:in `eval'"
```