title: install of node-red-contrib-i2c fails with NPM
body: <p>I have been having problems with my node red installation and the install of additional node packages...I am trying to install the node-red-contrib-i2c package on Raspberry PI <a href="http://flows.nodered.org/node/node-red-contrib-i2c" rel="nofollow noreferrer">http://flows.nodered.org/node/node-red-contrib-i2c</a> ...this is my console output:</p>
  
  <pre><code>pi@raspberrypi:~ $ npm install node-red-contrib-i2c
  </code></pre>
  
  <p>more console output...then error:</p>
  
  <pre><code>make: Leaving directory '/home/pi/node_modules/node-red-contrib-i2c/node_modules/i2c/build'
  gyp ERR! build error 
  gyp ERR! stack Error: `make` failed with exit code: 2
  gyp ERR! stack     at ChildProcess.onExit (/usr/share/node-gyp/lib/build.js:267:23)
  gyp ERR! stack     at ChildProcess.emit (events.js:98:17)
  gyp ERR! stack     at Process.ChildProcess._handle.onexit (child_process.js:809:12)
  gyp ERR! System Linux 4.4.50-v7+
  gyp ERR! command "nodejs" "/usr/bin/node-gyp" "rebuild"
  gyp ERR! cwd /home/pi/node_modules/node-red-contrib-i2c/node_modules/i2c
  gyp ERR! node -v v0.10.29
  gyp ERR! node-gyp -v v0.12.2
  gyp ERR! not ok 
  npm WARN This failure might be due to the use of legacy binary "node"
  npm WARN For further explanations, please read
  /usr/share/doc/nodejs/README.Debian
  
  npm ERR! i2c@0.2.3 install: `node-gyp rebuild`
  npm ERR! Exit status 1
  npm ERR! 
  npm ERR! Failed at the i2c@0.2.3 install script.
  npm ERR! This is most likely a problem with the i2c 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 i2c
  npm ERR! There is likely additional logging output above.
  
  npm ERR! System Linux 4.4.50-v7+
  npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install" "node-red-contrib-i2c"
  npm ERR! cwd /home/pi
  npm ERR! node -v v0.10.29
  npm ERR! npm -v 1.4.21
  npm ERR! code ELIFECYCLE
  npm ERR! 
  npm ERR! Additional logging details can be found in:
  npm ERR!     /home/pi/npm-debug.log
  npm ERR! not ok code 0
  </code></pre>
  
  <p>Something similar happens with several other packages that I have also tried to install including the MCP3008 ADC node package.</p>