fixing appveyor script

Author: karussell

appveyor.yml

@@ -1,18 +1,28 @@
 version: '{build}'
+skip_tags: true
+clone_depth: 10
+environment:
+  matrix:
+    - JAVA_HOME: C:\Program Files\Java\jdk1.7.0
+    #- JAVA_HOME: C:\Program Files\Java\jdk1.8.0
+branches:
+  only:
+    - master
+  except:
+    - gh-pages
 os: Windows Server 2012
 install:
   - ps: |
       Add-Type -AssemblyName System.IO.Compression.FileSystem
       if (!(Test-Path -Path "C:\maven" )) {
-        (new-object System.Net.WebClient).DownloadFile(
-          'http://www.us.apache.org/dist/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.zip',
-          'C:\maven-bin.zip'
-        )
+        (new-object System.Net.WebClient).DownloadFile('http://www.us.apache.org/dist/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.zip', 'C:\maven-bin.zip')
         [System.IO.Compression.ZipFile]::ExtractToDirectory("C:\maven-bin.zip", "C:\maven")
       }
-  - cmd: SET PATH=C:\maven\apache-maven-3.2.5\bin;%JAVA_HOME%\bin;%PATH%
+  - cmd: SET PATH=C:\maven\apache-maven-3.3.9\bin;%JAVA_HOME%\bin;%PATH%
   - cmd: SET MAVEN_OPTS=-Xmx1g
   - cmd: SET JAVA_OPTS=-Xmx1g
+  - cmd: mvn --version
+  - cmd: java -version
 build_script:
   - mvn clean package --batch-mode -DskipTest
 test_script: