Create README.md

Ayush7614 · web-flow · commit 31f154affca5 · 2021-02-27T03:09:13.000+05:30
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+# Countdown Clock and Timer
+## Description
+A simple timer that can be used to track runtime. The purpose of this is to provide a simple, and standard, way of tracking runtime. 
+- This is very useful when testing implementations, and helpful when tracking the progress of longer-running programs. 
+- The app will notify the user that the time has ended.
+
+### Language
+- [X] Python
+
+### Checklist
+Name | About
+:------------------ | :------------------
+Countdown clock and timer | Shows the current time and timer according to the user input.
+
+### Usage
+To access the `timer`, this application imports the following modules.
+```python
+import os
+import time
+```
+  
+### Instructions to run this application
+
+  1.  Download and Run the __countdown_clock_and_timer.py__
+  2. Set the countdown time.
+  3. Enter the hours, minutes and seconds .
+  4. Timer will be set according to the given input by the user.
+  5. It will show the countdown time and display it when the time gets over.
+  
+##### Example Output
+Output will be shown like that for the three seconds -
+```
+00:00:03
+00:00:02
+00:00:01
+00:00:00
+'Time is over'
+```
