Add doc

Update configuration.md

Create context-entity.md

Update context-entity.md

Update context-entity.md

Create context-table.md

Update context-entity.md

Update context-table.md

Update context-table.md

Update context-table.md

Update README.md

Create context-mink.md

Update context-mink.md

Update README.md
Merge pull request #34 from KnpLabs/doc

Doc