fix: README.md

[fahadsiddiqui]

Changes made:

1. Clear structure - Added bold headings and "Run:" labels
2. Code blocks - Put the installation commands in proper bash code blocks instead of inline
3. Bullet points - Converted the long prose instructions into easy-to-scan bullet lists
4. Proper formatting - Added backticks around:

• File names: CLAUDE.md
• Tool patterns: mcp__claude-in-chrome__*
• All skill names: /office-hours, /browse, etc.
• Commands: cd .claude/skills/gstack && ./setup

The sections are now much easier to read and follow, with clear visual separation between the command to run and the instructions that follow.