Cleanup README formatting for the NuoDB native Ruby driver.
Cleanup README formatting for the NuoDB native Ruby driver.

heapsource/nuodb-drivers,heapsource/nuodb-drivers,mjmichaels/nuodb-drivers,mjmichaels/nuodb-drivers,heapsource/nuodb-drivers,heapsource/nuodb-drivers,mjmichaels/nuodb-drivers,mjmichaels/nuodb-drivers,heapsource/nuodb-drivers,mjmichaels/nuodb-drivers,mjmichaels/nuodb-drivers,heapsource/nuodb-drivers,mjmichaels/nuodb-drivers,heapsource/nuodb-drivers,mjmichaels/nuodb-drivers,heapsource/nuodb-drivers