Sets the default verbosity level
dartR functions have a verbosity parameter that sets the level of reporting during the execution of the function. The verbosity level, set by parameter 'verbose' can be one of verbose 0, silent or fatal errors; 1, begin and end; 2, progress log; 3, progress and results summary; 5, full report. The default value for verbosity is stored in the r environment. This script sets the default value.
Set the default verbosity to be this value: 0, silent only fatal errors; 1, begin and end; 2, progress log; 3, progress and results summary; 5, full report [default 2]
Custodian: Arthur Georges (Post to https://groups.google.com/d/forum/dartr)