Add citation file

Signed-off-by: Jay Wang <[email protected]>

CITATION.cff

@@ -0,0 +1,11 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+authors:
+- family-names: "Wang"
+  given-names: "Zijie J."
+  orcid: "https://orcid.org/0000-0003-4360-1423"
+title: "Clip2Imgur: A MacOS Software to Upload Screenshots from the Clipboard to Imgur"
+version: 0.9.0
+doi: 10.5281/zenodo.5348350
+date-released: 2018-02-15
+url: "https://github.com/xiaohk/clip2imgur"

README.md

@@ -5,6 +5,8 @@
 
 [![Build Status](https://travis-ci.org/xiaohk/clip2imgur.svg?branch=master)](https://travis-ci.org/xiaohk/clip2imgur)
 <a href="https://swift.org/package-manager/"><img src="https://img.shields.io/badge/SPM-ready-red.svg"></a>
+[![License](https://img.shields.io/badge/License-MIT-yellowgreen)](https://github.com/xiaohk/clip2imgur/blob/master/LICENSE)
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.5348350.svg)](https://doi.org/10.5281/zenodo.5348350)
 
 
 ## Usage