Use file executable bit for script detection.
-rw-r--r-- 94 .gitignore
-rw-r--r-- 6748 README.rst
drwxr-xr-x - data
drwxr-xr-x - docs
drwxr-xr-x - src
drwxr-xr-x - var
drwxr-xr-x - www