This is a simple example program that shows how to use the is_dir function of
is_dir.h in the igl library.


To Build:
  make

To Run:
  ./example [path_1] [path_2] ... [path_n]

Example Run #1:
  Issuing:
    ./example . .. example.cpp non-existant-file
  should produce:
    is_dir(.) --> TRUE
    is_dir(..) --> TRUE
    is_dir(example.cpp) --> FALSE
    is_dir(non-existant-file) --> FALSE
