First readme.

Author: jcs090218

README.md

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+[![Build Status](https://travis-ci.com/jcs-elpa/ivy-file-preview.svg?branch=master)](https://travis-ci.com/jcs-elpa/ivy-file-preview)
+[![License: GPL v3](https://img.shields.io/badge/License-GPL%20v3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
+
+# ivy-file-preview
+> Preview the current ivy file selection.
+
+## Contribution
+
+If you would like to contribute to this project, you may either
+clone and make pull requests to this repository. Or you can
+clone the project and establish your own branch of this tool.
+Any methods are welcome!