add closed source tag

Author: milindgoel15

readme.md

@@ -1,7 +1,7 @@
 <div align="center">
    <img width="80" height="80" src="screenshots/logo.png"/>
    <h2>WeatherWiseApp</h2>
-   <p>a material design, <strong>live</strong>-weather app for android with <strong>Material You</strong> theming.</p>
+   <p>a material design, <strong>closed source live-weather app</strong> for android with <strong>Material You</strong> theming.</p>
 </div>
 
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