Yarn support AppVeyor & Travis

.travis.yml

@@ -14,13 +14,19 @@ matrix:
   - node_js: "7.4"
     env: LINT=1
 
+cache:
+  yarn: true
+  directories:
+  - node_modules
+  - $HOME/.yarn-cache
+
 notifications:
   email: false
 
 script:
   - docker run -d --name mysql -e MYSQL_ALLOW_EMPTY_PASSWORD=1 -e MYSQL_DATABASE=test -p 33306:3306 mysql:5.7
   - docker run --link mysql:db -e CHECK_PORT=3306 -e CHECK_HOST=db giorgos/takis
   - node --version
-  - npm --version
-  - if [ "$LINT" = "1" ]; then npm run lint; fi
-  - MYSQL_PORT=33306 npm run test:raw
+  - yarn --version
+  - if [ "$LINT" = "1" ]; then yarn run lint; fi
+  - MYSQL_PORT=33306 yarn run test:raw

appveyor.yml

@@ -16,10 +16,11 @@ services:
 
 cache:
   - node_modules
+  - "%LOCALAPPDATA%/Yarn"
 
 install:
   - ps: Install-Product node $env:nodejs_version
-  - npm install
+  - yarn install
 
 build: off
 
@@ -30,8 +31,8 @@ before_test:
 test_script:
   - mysql --version
   - node --version
-  - npm --version
-  - if "%LINT%"=="1" (npm run lint)
+  - yarn --version
+  - if "%LINT%"=="1" (yarn run lint)
   - node test/run.js
   - SET MYSQL_USE_COMPRESSION=1
   - node test/run.js