copy from tc39/template-for-proposals

.gitattributes

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+index.html  -diff merge=ours
+spec.js     -diff merge=ours
+spec.css    -diff merge=ours

.gitignore

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-# node
+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# 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 directories
 node_modules
-# emacs droppings
+jspm_packages
+
+# Optional npm cache directory
+.npm
+
+# Optional REPL history
+.node_repl_history
+
+# Only apps should have lockfiles
+yarn.lock
+package-lock.json
+npm-shrinkwrap.json
+
+# Emacs droppings
 *~

.npmrc

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+package-lock=false