Creates a symbolic link to another file in the vault.
cbvault.createLink(linkName, destinationName, [callback])
The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).
The callback for this method is defined as:
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'err' has 2 properties which hold detailed information:
This method creates a new symbolic link named LinkName that points to the file specified by DestinationName.
The value passed for LinkName must be a vault-local absolute path. The value passed for DestinationName must also be a vault-local path, but may be absolute or relative to LinkName.
Note: This method can only be called when Active is true, and cannot be called within events.