Test tool for recursive directory representation in JSON format.
Leaf nodes - files of type 'txt' or 'bin' with name and size printed. Txt-typed files have size as number of lines, bin-typed files have size parameter as the size of the file in bytes.
Intermediate nodes are simply directory names.
dir1 contains test file structure.
rootDir - root directory for representation. Used current location if none specified.
python json_ls.py <rootDir>