added images to README.md

Author: paulamib123

README.md

@@ -1 +1,21 @@
 # BookReview App
+
+This is a web app in which users can Login, Sign Up and search for books.
+
+### Techstack
+
+* React
+* HTML/CSS
+* Flask
+* PostgreSQL
+* Heroku
+
+### Snapshots
+<br/>
+<img src="https://github.com/paulamib123/BookReview/blob/master/home.png" style="width:600px;">
+<br/>
+<img src="https://github.com/paulamib123/BookReview/blob/master/signup.png:" style="width:600px;">
+<br/>
+<img src="https://github.com/paulamib123/BookReview/blob/master/login.png" style="width:600px;">
+<br/>
+<img src="https://github.com/paulamib123/BookReview/blob/master/search.png" style="width:600px;">