Merge pull request #299 from libtom/fix-appveyor

let's try to fix appveyor.yml

Author: sjaeckel

appveyor.yml

@@ -1,12 +1,18 @@
-version: 1.0.{build}
+version: 1.1.0-{build}
+branches:
+  only:
+  - master
+  - develop
+  - /^release/
+  - /^travis/
 image:
 - Visual Studio 2017
 - Visual Studio 2015
 build_script:
-  - if "Visual Studio 2017"=="%APPVEYOR_BUILD_WORKER_IMAGE%" call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
-  - if "Visual Studio 2015"=="%APPVEYOR_BUILD_WORKER_IMAGE%" call "C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd" /x64
-  - if "Visual Studio 2015"=="%APPVEYOR_BUILD_WORKER_IMAGE%" call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86_amd64
-  - nmake -f makefile.msvc all
-
+- cmd: >-
+    if "Visual Studio 2017"=="%APPVEYOR_BUILD_WORKER_IMAGE%" call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
+        if "Visual Studio 2015"=="%APPVEYOR_BUILD_WORKER_IMAGE%" call "C:\Program Files\Microsoft SDKs\Windows\v7.1\Bin\SetEnv.cmd" /x64
+        if "Visual Studio 2015"=="%APPVEYOR_BUILD_WORKER_IMAGE%" call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86_amd64
+        nmake -f makefile.msvc all
 test_script:
-  - test.exe
+- cmd: test.exe