Update README with build progress, GIFs, and completed features.

[devonwallerson]

Tasks:

• Update README with Milestone 2 progress
• Create GIFs showing build progress
• Document completed user stories
• Update Project Board screenshots
• Document any challenges faced
• Add setup instructions

Acceptance Criteria:

• README is up to date
• GIFs show clear progress
• All completed features are documented
• Project Board is updated

Dependencies: All previous issues