Functionality to update existing well log records with curve families

Closes #24 (closed)

Using the new update command, I user can now provide a well log record ID and that record will be updated with the curve family recognition.

The command has been written in a way that, if required, could be extended to include additional functionality later. Note: The current implementation only allows for a single well log record to be updated at a time (i.e. it only accepts a single well log ID).