readme updated and screenshots of app added

Provided information about App and how it works

Author: swati-gwc

README.md

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 # Amivents
-App which shows information about clubs and events hosted by it in a college.
-
+App which shows information about clubs and events hosted by it in a college.<br/>
 This app was made for Inhouse NTCC Practical Training , as a Summer project before starting of my third year of BTech CSE.
 
+### Watch Demo of App 
+In this video you can see how this mobile application will work on running. 
+[Click here to watch](https://youtu.be/ZNEex8cOFq8)
+
+### Tech Stack
+ * Written in Java Programming Language.
+ * IDE :  Android Studio
+ * No database used.
+
+### Screenshots of App
+
+![image](https://user-images.githubusercontent.com/63490144/122635090-86b24500-d0ff-11eb-8f0a-7ae68e1382bb.png)  ![image](https://user-images.githubusercontent.com/63490144/122635102-9f225f80-d0ff-11eb-9e76-fd298fb9862a.png) ![image](https://user-images.githubusercontent.com/63490144/122635115-b82b1080-d0ff-11eb-89da-8082d88d72fe.png)  ![image](https://user-images.githubusercontent.com/63490144/122635131-cd07a400-d0ff-11eb-8e2b-439972b903cf.png)  ![image](https://user-images.githubusercontent.com/63490144/122635161-eb6d9f80-d0ff-11eb-8447-34347d9d533b.png) ![image](https://user-images.githubusercontent.com/63490144/122635175-07714100-d100-11eb-83b4-3906c76760c2.png)
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