Add workflow to validate JSON

.github/workflows/ci.yml

@@ -0,0 +1,22 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  validate_list:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Use Node.js 20
+      uses: actions/setup-node@v4
+      with:
+        node-version: 20
+
+    - run: npm install  
+    - run: npm test

CONTRIBUTING.md

@@ -0,0 +1,37 @@
+# Contributing
+
+You're welcome to contribute to this repository directly by creating a PR.
+
+To do so, please follow the steps:
+
+1. Clone the repository
+
+```bash
+git clone git@github.com:celo-org/celo-token-list.git
+```
+
+2. Install the dependencies
+
+```bash
+npm install
+```
+
+3. Make changes...
+
+4. (optional) Run validation check
+
+```bash
+npm run test
+```
+
+4. Commit and push your changes
+
+```bash
+git checkout -b "<your-branch-name>"
+git commit -m "<your-commit-message>"
+git push origin <your-branch-name>
+```
+
+5. Raise a PR using GitHub UI
+
+Thanks!

celo.tokenlist.json

@@ -3,7 +3,7 @@
   "version": {
     "major": 2,
     "minor": 4,
-    "patch": 0
+    "patch": 1
   },
   "logoURI": "https://celo-org.github.io/celo-token-list/assets/celo_logo.svg",
   "keywords": ["celo", "tokens", "refi"],