Copy Libsodium's randombytes API and use for prng seeding#27

Merged

zanebeckwith merged 3 commits intoxaptum:masterfrom zanebeckwith:libsodium-randombytes

Sep 22, 2017

+549-226

Commits on Sep 21, 2017

Add a wrapper for AMCL's csprng, and always seed it.
Zane Beckwith
committed
Add libsodium package to travis.
Zane Beckwith
committed
Update README to reflect prng struct wrapper.
Zane Beckwith
committed