Renamed dvidclient -> pydvid
Added datasets_info.jsonschema (still needs more fields to be marked 'required')
schemas: Fixed a field type.
schema: datasets_info: Allow null in some fields.
moved README file
Update README.md

Adds some description of how to use schema and RAML in our SOA
Update README.md

Updated formatting
Merge commit '83e2d9852fe17e36e1613faaf8d42c52d3b479e8'
Reorganized repo and renamed schema files according to conventions spelled out in the readme.
Replaced voxels-metadata-schema with the more complete version copied from janelia-flyem/dvid-api
schemas: dvid-voxels-metadata: Allow empty string for resolution.
schemas: Added a "version" field to all schemas and a corresponding verison field in the schema properties itself.
When locating a schema to validate with, use the new directory structure of the dvidschemas repo.