Added Ko-fi button

Author: amitmerchant1990

README.md

@@ -1,7 +1,10 @@
 <h1 align="center">
   <br>
-  <img src="/images/reverie-text.png" alt="Reverie" width="200">
+  <img src="/images/reverie-text.png" alt="Reverie" width="200"/>
   <br>
+  <p align="center"
+  <a href="https://ko-fi.com/Y8Y2QC9Y"><img src="https://www.ko-fi.com/img/githubbutton_sm.svg" alt="Ko-fi" width="200"></a>
+  </p>
 </h1>
 
 Reverie is a [Jekyll](https://jekyllrb.com/)-powered theme which is simple and opinionated. It's actually a fork of [jekyll-now](https://github.com/barryclark/jekyll-now) with some additional features and personal touches which I've implemented to suit my needs for [my blog](https://www.amitmerchant.com).