Moving over the adam.avdl file from adam-format.

In order to get the bdg-formats repository going, I've moved over the adam.avdl file
wholesale from the adam-format module in the main adam repo.

To avoid conflicts, I've given this repo its own pom.xml with an artifactId of 'bdg-formats',
but carrying over the same version, parent pom, etc.
Merge pull request #1 from genomebridge/tdanford/adam-format-port

Moving over the adam.avdl file from adam-format.
Updating to prepare for schema move. Brings annotation format over, removes nested pileup.
Merge pull request #5 from fnothaft/prep-for-move

Updating to prepare for schema move.
Prepping for release.
[maven-release-plugin] prepare release bdg-formats-0.1.0
[maven-release-plugin] prepare for next development iteration
Adds contribution file and updates the license header on the AVDL file.
Merge pull request #6 from fnothaft/add-project-gov-files

Adds contribution file and updates the license header on the AVDL file.
Move the namespace from 'bdg_formats' to simply 'formats'
Merge pull request #7 from massie/namespace

Move the namespace from 'bdg_formats' to simply 'formats'
Removes unused record group ID field.
Merge pull request #8 from fnothaft/remove-rgid

Removes unused record group ID field.