title: appcelerator 5.1.0 ws/bufferutil build error
body: <p>I tried to install appcelerator today on Win7. All I get is "Appcelerator CLI is installing or upgrading, please wait....".</p>
  
  <p>installing by cli with</p>
  
  <pre><code>npm install appcelerator -g
  </code></pre>
  
  <p>fails with the following output. I tried installing 5.0.0 and got a different error message. Any ideas?</p>
  
  <pre><code>Finding version 5.1.0 ... OK
  Validating security checksum OK
  Installing ... OK
  Compiling platform native modules ...
  └ extract-opts/typechecker ... OK
  └ bunyan/dtrace-provider ...  OK
  └ extract-opts/typechecker ...  OK
  └ socket.io-client/ws ...  OK
  └ appc-ldapjs/dtrace-provider ...  OK
  └ bunyan/dtrace-provider ...  OK
  └ appc-ldapjs/dtrace-provider ...  OK
  └ ws/bufferutil ... gyp ERR! build error
  gyp ERR! stack Error: `C:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe` fail
  ed with exit code: 1
  gyp ERR! stack     at ChildProcess.onExit (C:\Program Files\nodejs\node_modules\
  npm\node_modules\node-gyp\lib\build.js:270:23)
  gyp ERR! stack     at emitTwo (events.js:100:13)
  gyp ERR! stack     at ChildProcess.emit (events.js:185:7)
  gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_proces
  s.js:200:12)
  gyp ERR! System Windows_NT 6.1.7601
  gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodej
  s\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
  gyp ERR! cwd C:\Users\Drew\.appcelerator\install\5.1.0\package\node_modules\arro
  w\node_modules\appc-pubsub\node_modules\socket.io-client\node_modules\engine.io-
  client\node_modules\ws\node_modules\bufferutil
  gyp ERR! node -v v5.5.0
  gyp ERR! node-gyp -v v3.0.3
  gyp ERR! not ok
  npm ERR! Windows_NT 6.1.7601
  npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\
  node_modules\\npm\\bin\\npm-cli.js" "install" "bufferutil@1.2.1" "--production"
  npm ERR! node v5.5.0
  npm ERR! npm  v3.3.12
  npm ERR! code ELIFECYCLE
  
  npm ERR! bufferutil@1.2.1 install: `node-gyp rebuild`
  npm ERR! Exit status 1
  npm ERR!
  npm ERR! Failed at the bufferutil@1.2.1 install script 'node-gyp rebuild'.
  npm ERR! Make sure you have the latest version of node.js and npm installed.
  npm ERR! If you do, this is most likely a problem with the bufferutil package,
  npm ERR! not with npm itself.
  npm ERR! Tell the author that this fails on your system:
  npm ERR!     node-gyp rebuild
  npm ERR! You can get their info via:
  npm ERR!     npm owner ls bufferutil
  npm ERR! There is likely additional logging output above.
  </code></pre>