Remove a lot of irrelevant stuff in .gitignore

.gitignore

@@ -1,42 +1,16 @@
-# Created by https://www.gitignore.io
+# Packages
+node_modules/
+yarn.lock
 
-.tmp/
-.vscode/
-
-### Node ###
-# Logs
-logs
+# Log files
+logs/
 *.log
 
+# Authentication
 test/auth.json
-
-# Runtime data
-pids
-*.pid
-*.seed
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (http://nodejs.org/api/addons.html)
-build/Release
-
-# Dependency directory
-# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
-node_modules
-test/auth.json
-examples/auth.json
-docs/_build
-
-# Secret keys
 docs/deploy/deploy_key
 docs/deploy/deploy_key.pub
+
+# Miscellaneous
+.tmp/
+.vscode/