ReadMe added

README.md

+## Capstone Feedback project
+
+- Frontend
+    - Using React
+    - It just have a basic functions such as giving feedbacks and see it by clicking 'history' button.
+
+- Backend
+    - Node.js, Mongo DB
+    - Download MongoDB compass to see the data passed directly.
+
+- To run frontend
+    - cd to 'frontend' directory and run 'npm i' in the terminal. After installed, run 'npm start'. Make sure you are
+    in the right directory.
+
+- To run backend
+    - cd to 'backend' directory and run 'npm i' in the terminal. After installed, run 'nrpm run dev' to connect the web to the server.
+
+ 
+