Switch CI from Travis to GitHub Actions

Remove .travis.yml and add .github/workflows/ci.yml.
Update README badge accordingly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: noel-enquanta

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.9'
+
+      - name: Install dependencies
+        run: |
+          pip install --upgrade pip
+          pip install --upgrade setuptools
+          pip install requests
+
+      - name: Run tests
+        run: python3 tests.py
+        env:
+          VOICEIT_API_KEY: ${{ secrets.VOICEIT_API_KEY }}
+          VOICEIT_API_TOKEN: ${{ secrets.VOICEIT_API_TOKEN }}

.travis.yml

@@ -1,6 +1,6 @@
 <img src="./python.png" width="100%" style="width:100%" />
 
-# VoiceIt3-Python [![travisstatus](https://app.travis-ci.com/voiceittech/VoiceIt3-Python.svg?branch=master)](https://app.travis-ci.com/github/voiceittech/VoiceIt3-Python) [![version](https://img.shields.io/pypi/dm/voiceit3)](https://pypi.org/project/voiceit3/) [![downloads](https://img.shields.io/pypi/dm/voiceit3)](https://pypi.org/project/voiceit3/) ![MIT](https://img.shields.io/github/license/mashape/apistatus.svg)
+# VoiceIt3-Python [![CI](https://github.com/voiceittech/VoiceIt3-Python/actions/workflows/ci.yml/badge.svg)](https://github.com/voiceittech/VoiceIt3-Python/actions/workflows/ci.yml) [![version](https://img.shields.io/pypi/dm/voiceit3)](https://pypi.org/project/voiceit3/) [![downloads](https://img.shields.io/pypi/dm/voiceit3)](https://pypi.org/project/voiceit3/) ![MIT](https://img.shields.io/github/license/mashape/apistatus.svg)
 
 A Python wrapper for VoiceIt's API 3.0 featuring Voice + Face Verification and Identification.