update theme to uncover, remove intro slide, add gitignore

.gitignore

@@ -0,0 +1,62 @@
+# Dependencies
+node_modules/
+
+# Build output
+build/
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+
+# nyc test coverage
+.nyc_output
+
+# Dependency directories
+jspm_packages/
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# macOS
+.DS_Store
+
+# Windows
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# Linux
+*~
+
+# IDEs
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Marp specific
+*.html
+*.pdf

slides/index.md

@@ -1,6 +1,6 @@
 ---
 marp: true
-theme: gaia
+theme: uncover
 paginate: true
 backgroundColor: #fff
 ---