README: highlight multimodal capability upfront

Author: safishamsi

README.md

@@ -4,6 +4,8 @@
 
 **A Claude Code skill.** Type `/graphify` in Claude Code - it reads your files, builds a knowledge graph, and gives you back structure you didn't know was there.
 
+Fully multimodal. Drop in code, PDFs, markdown, screenshots, diagrams, whiteboard photos, even images in other languages - graphify uses Claude vision to extract concepts and relationships from all of it and connects them into one graph.
+
 > Andrej Karpathy keeps a `/raw` folder where he drops papers, tweets, screenshots, and notes. graphify is the answer to that problem - 71.5x fewer tokens per query vs reading the raw files, persistent across sessions, honest about what it found vs guessed.
 
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