refactor: change readme

Merge pull request #12 from solid-resourcepack/fix/modern-item-strategy

fix: modern item retrieval strategy

chore: remove gradle properties from git

Merge pull request #10 from solid-resourcepack/development

chore: update to newest solid-material

Merge pull request #9 from solid-resourcepack/development

chore: update to newest solid-material

Merge pull request #8 from solid-resourcepack/development

chore: update to newest solid-material

Merge pull request #7 from solid-resourcepack/development

chore: update to newest solid-material

Merge pull request #6 from solid-resourcepack/development

feat: further implement solid material, get solid material by key

Merge pull request #5 from solid-resourcepack/development

impl: material support

Update README.md