Fix #162; check if an argument is a function
Add and remove fake .dat to avoid warnings #152
Fix bug in issue #162

c("a", "b") wasn't getting converted to a vector
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
Copy wtatage.ss_new from OM to EM #163
Tweak basic-run.R test
Update NEWS
Merge pull request #164 from ss3sim/update_get_results

Update get results
Add test for get_results_all()
Update NEWS
Merge remote-tracking branch 'origin/master' into feature/change_bins