README.md: rewrite text a bit
README.md: rewrite text a bit

Signed-off-by: Pavel Kretov <7cae407f1f3b56350827d1394be40a3e8f9cb303@gmail.com>

firegurafiku/doxygen-bootstrapped,rvlm/doxygen-bootstrapped,firegurafiku/doxygen-bootstrapped,firegurafiku/doxygen-bootstrapped,rvlm/doxygen-bootstrapped,rvlm/doxygen-bootstrapped