add Dockerfile for automated container building
Merge pull request #25 from avinson/master

add Dockerfile for automated container building
Merge branch 'master' of https://github.com/mit-probabilistic-computing-project/BayesDB
Merge branch 'master' into dev
Ignore model files that don't follow name convention
Models are now saved with the table schema. When models are loaded into the table, the schema will be updated to match the models if necessary (and if models with a different schema don't already exist).
Updated tests to check loading of models with saved schema.
Merge branch 'master' of https://github.com/mit-probabilistic-computing-project/BayesDB
Merge branch 'dev'