updated README with npm run build

Author: SriSatyaLokesh

docs/README.skills.md

@@ -114,6 +114,7 @@ See [CONTRIBUTING.md](../CONTRIBUTING.md#adding-skills) for guidelines on how to
 | [dotnet-timezone](../skills/dotnet-timezone/SKILL.md) | .NET timezone handling guidance for C# applications. Use when working with TimeZoneInfo, DateTimeOffset, NodaTime, UTC conversion, daylight saving time, scheduling across timezones, cross-platform Windows/IANA timezone IDs, or when a .NET user needs the timezone for a city, address, region, or country and copy-paste-ready C# code. | `references/code-patterns.md`<br />`references/timezone-index.md` |
 | [dotnet-upgrade](../skills/dotnet-upgrade/SKILL.md) | Ready-to-use prompts for comprehensive .NET framework upgrade analysis and execution | None |
 | [doublecheck](../skills/doublecheck/SKILL.md) | Three-layer verification pipeline for AI output. Extracts verifiable claims, finds supporting or contradicting sources via web search, runs adversarial review for hallucination patterns, and produces a structured verification report with source links for human review. | `assets/verification-report-template.md` |
+| [draw-io-diagram-generator](../skills/draw-io-diagram-generator/SKILL.md) | Use when creating, editing, or generating draw.io diagram files (.drawio, .drawio.svg, .drawio.png). Covers mxGraph XML authoring, shape libraries, style strings, flowcharts, system architecture, sequence diagrams, ER diagrams, UML class diagrams, network topology, layout strategy, the hediet.vscode-drawio VS Code extension, and the full agent workflow from request to a ready-to-open file. | `references/drawio-xml-schema.md`<br />`references/shape-libraries.md`<br />`references/style-reference.md`<br />`scripts/.gitignore`<br />`scripts/README.md`<br />`scripts/add-shape.py`<br />`scripts/validate-drawio.py`<br />`templates` |
 | [editorconfig](../skills/editorconfig/SKILL.md) | Generates a comprehensive and best-practice-oriented .editorconfig file based on project analysis and user preferences. | None |
 | [ef-core](../skills/ef-core/SKILL.md) | Get best practices for Entity Framework Core | None |
 | [entra-agent-user](../skills/entra-agent-user/SKILL.md) | Create Agent Users in Microsoft Entra ID from Agent Identities, enabling AI agents to act as digital workers with user identity capabilities in Microsoft 365 and Azure environments. | None |