Add opening text before feature list in README.md
Add opening text before feature list in README.md

libimobiledevice-win32/libplist,libimobiledevice-win32/libplist,libimobiledevice-win32/libplist,libimobiledevice/libplist,libimobiledevice/libplist,libimobiledevice/libplist,libimobiledevice-win32/libplist