VectorCraft guides

1. 01How to install VectorCraft on macOS, Windows and LinuxWhich VectorCraft 0.9.0 file to download for your OS and CPU, how to verify it, and how to build VectorCraft from source. Based on the official README and the v0.9.0 release.
2. 02VectorCraft: a free, open-source Adobe Illustrator alternativeWhat VectorCraft 0.9.0 is, what it already does, and where it still falls short of Adobe Illustrator. Based only on the official VectorCraft README and docs.