Wrote documentation files

Author: sanchitbh

.circleci/config.yml

@@ -7,10 +7,23 @@ jobs:
       - image: circleci/php:8.0-fpm-node-browsers
     steps:
       - checkout
+      - run:
+          name: Install dependencies
+          command: |
+            apt-get update
+            apt-get install -y python3 python3-pip
+            pip3 install coverage coveralls
       - run: sudo composer self-update --no-progress --no-interaction
       - run: composer install --no-progress --no-interaction --prefer-dist
       - run: ./vendor/bin/phpunit
-
+      - run:
+          name: Generate code coverage report
+          command: coverage run -m unittest discover
+      - run:
+          name: Upload code coverage report to Coveralls
+          command: coveralls
+          environment:
+            COVERALLS_REPO_TOKEN: oTgNlNs5fUmP2vsiEDuCET4o1RCyC7iBe
 workflows:
   version: 2
   test: