Proof of concept that provides a generic interface for creating a
fingerprints for archives.
Update README.md
Made an ArchiveReade class that readers subclass from.
EggReader can now read metadata.
Merge pull request #5 from ashcrow/archive

Archive updates
Added functionality to read metadata from JAR files. This works with
works with:

META-INF/MANIFEST.MF
*/pom.properties