CI: move to Github Actions

.github/workflows/gradle-check.yml

@@ -0,0 +1,19 @@
+name: Gralde check
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v2
+      - name: Build
+        run: |
+          ./gradlew :app:assembleDebug

.travis.yml

@@ -1,24 +0,0 @@
-sudo: true
-dist: trusty
-language: android
-jdk: oraclejdk8
-
-android:
-  components:
-    - platform-tools
-    - tools
-    - build-tools-25.0.2
-    - android-25
-    - extra-android-m2repository
-
-before_install:
-  - echo "y" | sdkmanager "cmake;3.6.4111459"
-  - git clone https://github.com/urho3d/android-ndk.git $HOME/android-ndk
-  - export ANDROID_NDK_HOME=$HOME/android-ndk
-
-script:
-  - ./gradlew :app:assembleDebug
-  
-after_success:
-  - bash <(curl -s https://codecov.io/bash)
-