Update README.md

Aetherra 0.5.0-beta.0

Release v0.1.0-alpha.2

Integrity Manifest: missing
Generated-by: create_annotated_tag.py

Provenance v0.1.0-alpha.2-provenance

Type: provenance
Generated-by: create_provenance_tag.py

Aetherra file reorganization.

Aetherra v1.0.0 - Code Awakened