Fixing appveyor.yml

Author: ybainier

appveyor.yml

@@ -2,14 +2,14 @@ version: 1.0.{build}
 branches:
   only:
   - master
-image: Visual Studio 2015
+image: Visual Studio 2017
 configuration: Release
 platform: x64
 environment:
-  BOOST_HOME: C:\Libraries\boost_1_59_0
-  BOOST_LIB_PATH: C:\Libraries\boost_1_59_0\lib64-msvc-14.0
+  BOOST_HOME: C:\Libraries\boost_1_67_0
+  BOOST_LIB_PATH: C:\Libraries\boost_1_67_0\lib64-msvc-14.1
 before_build:
-- cmd: set PATH=C:\Program Files (x86)\MSBuild\14.0\Bin;%PATH%
+- cmd: set PATH=%ProgramFiles(x86)%\Microsoft Visual Studio\2017\Community\MSBuild\15.0\Bin;%PATH%
 build:
-  project: msvc\2015\Disruptor-all.sln
+  project: msvc\2017\Disruptor-all.sln
   verbosity: normal