Fix bug in missing example file detection

v1.0.4

Bump version to 1.0.4

Handle optional subdir 'exercises' for exercise files

This should lead to easier track maintenance.

Patch release - fix bug in example solution recognition

The Problems API matches /example/i against the entire path, not just the file name. Configlet was just looking at the file name.

Patch release - improved build script

The build script was archiving the binary so that when it got unpacked it ended up in a directory out/. This fixes it so that the binary is not in any directory.

First official release

This is a very simple sanity checker for exercism problem tracks.

It has one command:

$ configlet path/to/track