add help string.
tree5f46f44106a4adae497749f27a87216e8e769fb7
-rw-r--r-- 26433 CHANGES
-rw-r--r-- 35147 COPYING
-rw-r--r-- 1364 MANIFEST
-rw-r--r-- 34 MANIFEST.SKIP
-rwxr-xr-x 1046 Makefile.PL
-rw-r--r-- 1188 README
-rw-r--r-- 69 TODO
drwxr-xr-x - bin
drwxr-xr-x - examples
drwxr-xr-x - lib
drwxr-xr-x - t
drwxr-xr-x - tlinks