697ce23 Some more tweaks to README and R...

based on: http://github.com/torvalds/subsurface/commit/697ce2380f95c561922af6f2cd84c528148afac7

compiled with: mingw 3.4.5

notes:
added documentation images in subsurface_win32_x86_dependencies.zip

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>