Alpha release, Project Renaming

This is an alpha (pre-release) package. It's still in development, but has
basic functionality fleshed out. Please refer to the README of the
project to get started.

• PyPI - nistbeacon

v0.7.0 (Alpha Release)

• Name changes
  • Changed from py_nist_beacon to nistbeacon
  • Changed from NistRandomnessBeacon to NistBeacon
  • Changed from NistRandomnessBeaconValue to NistBeaconValue