Make the code look within the entire load_from path for bundler.gemspec instead of stopping on 2 tries.
added a failing spec for issue #144
Merge branch 'fix_bundler_path' of github.com:garylin/warbler into garylin-fix_bundler_path
Merge branch 'fix_144' into garylin-fix_bundler_path
Merge branch 'master' into garylin-fix_bundler_path
improved test for #144