Installing node on appveyor

appveyor.yml

@@ -1,5 +1,4 @@
 environment:
-  nodejs_version: "6.3.0"
   matrix:
   - TARGET: x86_64-pc-windows-msvc
   cert:
@@ -18,6 +17,7 @@ branches:
 
 install:
   - git submodule update --init --recursive
+  - ps: Install-Product node 6
   - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-1.9.0-x86_64-pc-windows-msvc.exe"
   - ps: Start-FileDownload "https://github.com/ethcore/win-build/raw/master/SimpleFC.dll" -FileName nsis\SimpleFC.dll
   - ps: Start-FileDownload "https://github.com/ethcore/win-build/raw/master/vc_redist.x64.exe" -FileName nsis\vc_redist.x64.exe
@@ -25,6 +25,8 @@ install:
   - SET PATH=%PATH%;C:\Program Files (x86)\Rust\bin;C:\Program Files (x86)\NSIS;C:\Program Files (x86)\Microsoft SDKs\Windows\v7.1A\Bin
   - rustc -V
   - cargo -V
+  - node -v
+  - npm -v
 
 build: off