Expand .gitignore for Laravel, update README with one-command setup, simplify env configs

.gitignore

@@ -16,10 +16,21 @@ redis_data/
 .DS_Store
 Thumbs.db
 
-# Laravel (if src is committed)
+# Laravel - commit most files, ignore generated/local files
+src/.env
 src/vendor/
 src/node_modules/
-src/.env
+src/bootstrap/cache/*
+!src/bootstrap/cache/.gitignore
 src/storage/*.key
 src/storage/logs/*
 !src/storage/logs/.gitkeep
+src/storage/framework/cache/*
+!src/storage/framework/cache/.gitignore
+src/storage/framework/sessions/*
+!src/storage/framework/sessions/.gitignore
+src/storage/framework/views/*
+!src/storage/framework/views/.gitignore
+src/public/hot
+src/public/storage
+src/public/build