identify scenarios within folder using regular expression, as opposed to -cod, -fla, -sar specifically
do not need bias folder - still need to create check for SS3 output
tryCatch applied to r4ss:SS_output for OM - returns output if .sso file not found
tryCatch when reading SS output - message stating which scenario is missing SS files
created function "id_scenarios" that checks directory for ss3sim scenarios. used in get_results_all to identify scenarios and check that user-specified scenarios exist
Merge pull request #164 from ss3sim/update_get_results

Update get results