Various infrastructure tweaks. (#2)

* ALL TEH UPGRADEZ

* I'M SO OVER NODE6

* Add note about watch

* Use rimraf and don't build test

* Add ticket comment

.gitignore

@@ -3,4 +3,8 @@ dist/
 
 test/integration/tmp
 test/unit/tmp
-.nyc_output/
+.nyc_output/
+.DS_Store
+node_modules
+package-lock.json
+coverage

.npmignore

@@ -0,0 +1,7 @@
+/*
+!/dist
+dist/**/*.map
+dist/test
+!LICENSE.txt
+!HISTORY.md
+!README.md

.travis.yml

@@ -0,0 +1,24 @@
+language: node_js
+
+node_js:
+  - "8"
+  - "10"
+  - "11"
+
+branches:
+  only:
+    - master
+
+install:
+  # Fail if lockfile outdated.
+  # https://yarnpkg.com/lang/en/docs/cli/install/#toc-yarn-install-frozen-lockfile
+  - yarn install --frozen-lockfile
+
+script:
+  - yarn --version
+  - yarn run clean
+  - yarn run compile
+  - yarn run lint
+  - yarn run tests
+  # TODO: Add coverage
+  # https://github.com/FormidableLabs/yesno/issues/5

CONTRIBUTING.md

@@ -0,0 +1,38 @@
+Contributing
+============
+
+Thanks for contributing!
+
+## Development
+
+Install the project using `yarn` (which we've standardized on for development):
+
+```sh
+$ yarn install
+```
+
+You can build and run everything with:
+
+```sh
+$ yarn run compile
+$ yarn run check
+```
+
+If you are actively developing, you can run a watch in one terminal:
+
+```sh
+$ yarn run watch
+```
+
+to build source files and then do whatever development you want in a separate terminal.
+
+## Releasing a new version to NPM
+
+_Only for project administrators_.
+
+1. Update `HISTORY.md`, following format for previous versions
+2. Commit as "History for version NUMBER"
+3. Run `npm version patch` (or `minor|major|VERSION`) to run tests and lint,
+   build published directories, then update `package.json` + add a git tag.
+4. Run `npm publish` and publish to NPM if all is well.
+5. Run `git push && git push --tags`

HISTORY.md

@@ -0,0 +1,4 @@
+History
+=======
+
+## Unreleased

LICENSE.txt

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2018 Formidable Labs
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.