Add license headers across the project

ts/components/emoji/Emoji.stories.tsx

@@ -1,3 +1,6 @@
+// Copyright 2020 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
 import * as React from 'react';
 import { storiesOf } from '@storybook/react';
 import { boolean, select, text } from '@storybook/addon-knobs';

ts/components/emoji/Emoji.tsx

@@ -1,3 +1,6 @@
+// Copyright 2019-2020 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
 import * as React from 'react';
 import classNames from 'classnames';
 import { emojiToImage, getImagePath, SkinToneKey } from './lib';

ts/components/emoji/EmojiButton.stories.tsx

@@ -1,3 +1,6 @@
+// Copyright 2020 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
 import * as React from 'react';
 
 import { storiesOf } from '@storybook/react';

ts/components/emoji/EmojiButton.tsx

@@ -1,3 +1,6 @@
+// Copyright 2019-2020 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
 import * as React from 'react';
 import classNames from 'classnames';
 import { get, noop } from 'lodash';

ts/components/emoji/EmojiPicker.stories.tsx

@@ -1,3 +1,6 @@
+// Copyright 2020 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
 import * as React from 'react';
 
 import { storiesOf } from '@storybook/react';

ts/components/emoji/EmojiPicker.tsx

@@ -1,3 +1,6 @@
+// Copyright 2019-2020 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
 import * as React from 'react';
 import classNames from 'classnames';
 import {

ts/components/emoji/lib.ts

@@ -1,3 +1,6 @@
+// Copyright 2019-2020 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
 // Camelcase disabled due to emoji-datasource using snake_case
 /* eslint-disable camelcase */
 import untypedData from 'emoji-datasource';