This patch is delaying the point where permissions are dropped into the `start_ipfs` script. This way, instead of exiting on permission issues, we can fix them on our own inside the script, then drop privileges and continue doing ipfs specific stuff with the correct user.

I've removed the `chmod 0777` step from the readme since it's not needed anymore.

License: MIT
Signed-off-by: kpcyrd <git@rxv.cc>