added inline of rocksdb files

This makes the file structure a bit gross and I imagine there is a better way, but this was the path of least resistance to allow me to not have to specify the shared library file at runtime on the binary. No longer will the .so file be required which is pretty nice, but build times are a bit longer. 

I added migrator.sh which *should* map all the files from a new rocksdb over to this repo correctly, but it's just what I remember from doing a lot of the process by hand and probably will need some improvements to be perfect. Let me know what you think and thanks for the nice base :)  if you're not a fan, I'll understand and maintain a fork but hopefully we can figure something out. If only go would link .so into the binary...