[_added] springs-adaptor-rebound scaffolding

Summary:
I wouldn't normally send `yo` output for review, but since this is a different package, it seemed worthwhile.

Since the web is especially sensitive to filesize, keeping dependencies out of the core whenever possible seems like a good move, hence this package.

Reviewers: O3 Material JavaScript platform reviewers, #material_motion, O2 Material Motion, featherless

Reviewed By: #material_motion, O2 Material Motion, featherless

Tags: #material_motion

Differential Revision: http://codereview.cc/D2474

packages/springs-adaptor-rebound/README.md

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+# Material Motion Adaptor for Rebound Springs #
+
+Creates Material Motion springs powered by Rebound
+
+## Usage ##
+
+```javascript
+import { springSource } from 'material-motion-springs-adaptor-rebound';
+
+
+```
+
+See also the [`springSource` specification]() in [the Starmap](https://material-motion.github.io/material-motion/starmap/specifications/streams/sources/SpringSource).
+
+## API ##
+
+To encourage code readability, we follow the named arguments pattern: each function takes a single object literal.  Internally, we destructure that object to read a function's arguments.
+
+### `springSource` ###
+
+## Installation ##
+
+```
+yarn add material-motion-springs-adaptor-rebound
+```
+
+## License ##
+
+[Apache 2.0](http://www.apache.org/licenses/LICENSE-2.0)

packages/springs-adaptor-rebound/package.json

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+{
+  "name": "material-motion-springs-adaptor-rebound",
+  "version": "0.0.0",
+  "description": "Creates Material Motion springs powered by Rebound",
+  "main": "dist/index.js",
+  "types": "src/index.ts",
+  "scripts": {
+    "lint": "$( yarn bin )/tslint -c ../../tslint.json --project tsconfig.json",
+    "test": "node ../../tools/test.js --only springs-adaptor-rebound",
+    "clean": "rm -rf ./dist/*; mkdir -p ./dist/",
+    "build": "yarn run clean; $( yarn bin )/tsc"
+  },
+  "dependencies": {
+    "tslib": "^1.2.0"
+  },
+  "devDependencies": {
+    "tslint": "4.0.2",
+    "typescript": "2.1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@github.com:material-motion/material-motion-js.git"
+  },
+  "keywords": [
+    "animation",
+    "gestures",
+    "interactive",
+    "material",
+    "motion",
+    "multitouch",
+    "observables",
+    "odeon",
+    "physics",
+    "rebound",
+    "springs",
+    "touch",
+    "transitions",
+    "tweens"
+  ],
+  "author": "The Material Motion Authors (see AUTHORS)",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/material-motion/material-motion-js/issues/"
+  },
+  "homepage": "https://github.com/material-motion/material-motion-js/tree/develop/packages/springs-adaptor-rebound/#readme"
+}

packages/springs-adaptor-rebound/src/__tests__/springSource.test.ts

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+/** @license
+ *  Copyright 2016 - present The Material Motion Authors. All Rights Reserved.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ *  use this file except in compliance with the License. You may obtain a copy
+ *  of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ */
+
+import { expect } from 'chai';
+
+import {
+  beforeEach,
+  describe,
+  it,
+} from 'mocha-sugar-free';
+
+import {
+  stub,
+} from 'sinon';
+
+import springSource from '../springSource';
+
+declare function require(name: string);
+
+// chai really doesn't like being imported as an ES2015 module; will be fixed in v4
+require('chai').use(
+  require('sinon-chai')
+);
+
+describe('springSource',
+  () => {
+    beforeEach(
+      () => {
+      }
+    );
+
+    it('',
+      () => {
+      }
+    );
+  }
+);
+

packages/springs-adaptor-rebound/src/index.ts

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+/** @license
+ *  Copyright 2016 - present The Material Motion Authors. All Rights Reserved.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ *  use this file except in compliance with the License. You may obtain a copy
+ *  of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ */
+
+export * from './springSource';
+export { default as springSource } from './springSource';

packages/springs-adaptor-rebound/src/springSource.ts

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+/** @license
+ *  Copyright 2016 - present The Material Motion Authors. All Rights Reserved.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ *  use this file except in compliance with the License. You may obtain a copy
+ *  of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ */
+
+export default function springSource() {
+
+}

packages/springs-adaptor-rebound/tsconfig.json

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+{
+  "extends": "../../tsconfig.json",
+  "include": ["./src/**/*"],
+  "exclude": ["**/*.test.*"],
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src"
+  }
+}