docs: Show two levels of content in index:
tree4d14607951e3c48daaaba253b62df133fd5f31f8
-rw-r--r-- 193 .arcconfig
-rw-r--r-- 653 .arclint
-rw-r--r-- 92 .gitattributes
-rw-r--r-- 22 .gitignore
-rw-r--r-- 7250 CMakeLists.txt
-rw-r--r-- 1324 CREDITS.txt
-rw-r--r-- 2753 LICENSE.txt
-rw-r--r-- 709 README
drwxr-xr-x - cmake
drwxr-xr-x - docs
drwxr-xr-x - include
drwxr-xr-x - lib
drwxr-xr-x - test
drwxr-xr-x - tools
drwxr-xr-x - utils
drwxr-xr-x - www