Create .travis.yml file for Travis CI configuration

.travis.yml

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+language: android
+dist: trusty
+sudo: required
+jdk: oraclejdk
+
+branches:
+  only:
+  - master
+  - develop
+
+before_cache:
+ -rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
+ -rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+cache:
+ directories:
+ -$HOME/.gradle/caches/
+ -$HOME/.gradle/wrapper/
+env:
+ global:
+ - ANDROID_API=27
+ - ANDROID_BUILD_TOOLS=27.0.3
+android:
+ components:
+ - tools
+ - platform-tools
+ - build-tools-$ANDROID_BUILD_TOOLS
+ - android-$ANDROID_API
+ - extra-google-m2repository
+ - extra-android-m2repository # for design library
+ - addon-google_apis-google-19 # google play services
+ licenses:
+ - android-sdk-preview-license-.+
+ - android-sdk-license-.+
+ - google-gdk-license-.+
+
+script:
+  - ./code-check.sh
+after_success:
+  - ./bintray-upload.sh

code-check.sh

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+#!/usr/bin/env bash
+
+echo -e "\033[0;32mStart normal check \033[0m"
+./gradlew check
+echo -e "\033[0;32m Finished normal check \033[0m"
+
+echo -e "\033[0;32m Start checkstyle check \033[0m"
+./gradlew checkstyle
+echo -e "\033[0;32m Finished checkstyle check \033[0m"
+
+echo -e "\033[0;32m Start ktlint check \033[0m"
+./gradlew ktlint
+echo -e "\033[0;32m Finished ktlint check \033[0m"