add readme and license.

Author: EsProgram

Assets/WaveformProvider/readme_en.txt

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+// ------------------------------------------------------------------------
+// WaveformProvider
+// Version 0.1.0
+// ------------------------------------------------------------------------
+
+InkPainter is required to use this asset.
+Please use InkPainter 'nv1.2.1' or later version.
+
+【InkPainter Download】
+   * https://assetstore.unity.com/packages/tools/particles-effects/ink-painter-86210
+   * https://github.com/EsProgram/InkPainter/releases
+
+
+
+■ How to use
+
+For details, please refer to [https://github.com/EsProgram/WaveformProvider].
+
+
+■ Version History
+
+0.1.0
+   - Initial version

Assets/WaveformProvider/readme_en.txt.meta

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+//-----------------------------------------------------
+// WaveformProvider
+// Version 0.1.0
+//-----------------------------------------------------
+
+このアセットを使うには、InkPainterが必要です。
+InkPainterの 'nv1.2.1' 以降のバージョンを利用して下さい。
+
+【InkPainter Download】
+  * https://assetstore.unity.com/packages/tools/particles-effects/ink-painter-86210
+  * https://github.com/EsProgram/InkPainter/releases
+
+
+
+■ 使用方法
+
+詳細は [https://github.com/EsProgram/WaveformProvider] を参照して下さい。
+
+
+■ バージョン履歴
+
+0.1.0
+  - 初期バージョン

Assets/WaveformProvider/readme_jp.txt

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+MIT License
+
+Copyright (c) 2018 Es_Program
+
+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.