Implementation of the create command

Implementation of the create command to support db.createCollection()
Version 0.12. Improved support and refactoring for createCollection command
Merge pull request #6 from ergo70:master
Updated README.md to point to the last compiled version of ToroDB
Updated README.md to point to the last compiled version of ToroDB
Merge pull request #1 from torodb/master

pull from toroDB #1