add gamma correction suggested by coni
[booh] / data / man / man1 /
drwxr-xr-x   ..
-rw-r--r-- 4849 booh-backend.1
-rw-r--r-- 1648 booh-fix-whitebalance.1
-rw-r--r-- 1655 booh-gamma-correction
-rw-r--r-- 1975 booh.1
-rw-r--r-- 1954 webalbum2booh.1