WordCraft guides

1. 01How to install WordCraft on macOS, Windows and LinuxWhich WordCraft 0.5.0 file to download for your OS and CPU, how to verify it, and how to build WordCraft from source. Based on the official README and the v0.5.0 release.
2. 02WordCraft: a free, open-source Microsoft Word alternativeWhat WordCraft 0.5.0 is, what it already does, and where it still falls short of Microsoft Word. Based only on the official WordCraft README and docs.