Added support for MariaDB!

 * Added MariaDBService, MariaDBCrudService classes
 * Added tests for new services
 * Added example-meriadb-app to docs
 * Fixed typos in other example docs
 * Updated travis build spec

.travis.yml

@@ -9,13 +9,15 @@ before_install:
 - sudo service mysql stop
 - docker pull mysql:5.7
 - docker pull mysql:8
+- docker pull mariadb:10.3
 - docker run -d -p 3306:3306 -p 33060:33060 -e MYSQL_ROOT_PASSWORD=unittest --name mysql5.7 mysql:5.7
 - docker run -d -p 3307:3306 -p 33070:33060 -e MYSQL_ROOT_PASSWORD=unittest --name mysql8 mysql:8
+- docker run -d -p 3308:3306 -e MYSQL_ROOT_PASSWORD=unittest --name mariadb10.3 mariadb:10.3
 - sleep 30
 - docker exec -it mysql5.7 mysql -u root --password=unittest -e "INSTALL PLUGIN mysqlx SONAME 'mysqlx.so';"
 script:
-- MYSQL_PORT=33060 GENERATE_IDS=1 npm run report
-- MYSQL_PORT=33070 GENERATE_IDS=0 npm run cover_noclean
+- MARIA_PORT=3308 MYSQL_PORT=33060 GENERATE_IDS=1 npm run report
+- MARIA_PORT=3308 MYSQL_PORT=33070 GENERATE_IDS=0 npm run cover_noclean
 after_script:
 - npm install coveralls@2.10.0 && cat ./coverage/lcov.info | ./node_modules/.bin/coveralls
 before_deploy: