Update README.md
Add documentation
Modify system message for web tasks
Add 'contrarian' and 'tutor' presets
Add 'poem' and 'stylenews' presets
Add 'table*' presets
Add more creative presets
Add some creative presets
Add 'presentation*' presets
Add 'style*' and 'baby' presets
Add preset 'ner'
Add 'summary*' and 'sentiment*' presets
Fix G304 (CWE-22)
Fix '--list-presets' wrong formatting
Add 'presets'
Add '--list-presets' option