updating readme file

README.md

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 This is a very simple Unity application which can be used in editor as is, or built into a standalone for viewing assetbundle files. This was originally created as a utility application for a neuroscience research project but it can be used during game development to quickly check the quality of assetbundles. View oribitting, zooming, directional light intensity and direction, background exposure, and snapshotting are the available controlled parameters.
 
 <img src="./github_readme_files/assetbundle_viewer_demo_image_1.png"/>
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 # Running 
 For running in Unity Editor, just open *ABVScene* and run it inside editor. Alternatively, you can build a player with *ABVScene* included.
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 1. In *Resolution* section under *Resolution and Presentation*, select *Windowed* from the *Fullscreen Mode* dropdown.
 
 2. In *Standalone Player Options* under *Resolution and Presentation*, check *Resizeable Window* and *Allow Fullscreen Switch* checkboxes.
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 # License
 AssetBundle Viewer (ABV) is licensed under Apache 2.0 License.
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 # Credits
 + Developed by Farzad Shayanfar