add readme, license, and demo

README.md

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+![](.github/images/title-icon.png)
+
+# Flash Animation Toolset
+
+> Convert your flash animation for Unity easy!
+
+[Trial Version](https://assetstore.unity.com/packages/tools/animation/flash-animation-toolset-trial-73896) |
+[Full Version](https://assetstore.unity.com/packages/tools/animation/flash-animation-toolset-73323) |
+[Forum](https://forum.unity.com/threads/1-3-15-flash-animation-toolset.440085) |
+[Web Demo](.github/demo) |
+[User Guide](Assets/FlashTools/Docs/GUIDE.md) |
+[API Reference](Assets/FlashTools/Docs/API.md) |
+[Changelog](Assets/FlashTools/Docs/CHANGELOG.md)
+
+## Features
+
+- Support all transformations like 'rotation', 'skew' and 'scale' (except 3D)
+- Support all tweens(classic, motion and etc), keyframes and layers
+- Support mask layers
+- Support bitmap and vector graphics
+- Support all clip color effects like 'brightness', 'tint', 'alpha' and etc
+- Support most blending modes (all except Alpha and Erase)
+- Simple runtime API for controlling your animations in Unity
+- Automatic packing texture atlases of animations with different settings
+- Great performance with zero allocations in update loop
+- Frame labels to separate sequences in one timeline
+- Export marked "for export" clips and main timeline
+- Live preview of animations in the Unity editor
+
+Supports Unity 2017.4 (LTS) and newer, both Personal and Pro. Full C# source code included.
+
+Leave your rating for this Asset. It is very important for me and the development of the project :) Thank you!
+
+## Usage video
+
+<iframe width="520" height="360" src="https://www.youtube.com/embed/uE_XRWZ5KHA" frameborder="0" allowfullscreen></iframe>
+
+## Screenshots
+
+![](.github/images/screenshot-1.png)
+![](.github/images/screenshot-2.png)
+![](.github/images/screenshot-3.png)
+
+## [License (MIT)](./LICENSE.md)
+
+Samples use "Creative Commons CC0 1.0 Universal License" animations from [Glitch game](http://www.glitchthegame.com/public-domain-game-art)