grid sweep attempts to parse arg_dict if its not a dict.

simulations/grid_sweep.py

@@ -8,6 +8,8 @@ def main(command, arg_dict, outfile, remember_file='remember_grid_sweep.RDS'):
     print(remember_file)
     remember = pyRemembeR.remember.Remember()
     remember.set_file(remember_file)
+    if type(arg_dict) is not dict:
+        arg_dict = eval(arg_dict)
     remember[outfile] = arg_dict
     remember.save_to_r()
     keys = []