Provider now waits for instances to be `AVAILABLE`

The provider now waits for instances to be AVAILABLE. Also fixed some lifeCycle state issues around VNC resource destruction and other state management issues. Updated /docs/*.

Fixed DB timeout, required passphrase, block issues, docs

Multiple fixes; #3, #5, #9, #10

Fixed block volume issues

The size of block volumes can now be specified.

Initial release

This is the initial release of the Oracle Bare Metal Cloud Services Terraform provider.