title: Cannot install npm i node-resemble OSX
body: <pre><code>tmp-125-48:engineerappcopy User$ npm i node-resemble
  npm WARN package.json cloudfmapp@1.0.0 No README data
  
  &gt; canvas@1.6.2 install /Users/User/Documents/dev/engineerappcopy/node_modules/node-resemble/node_modules/canvas
  &gt; node-gyp rebuild
  
  ./util/has_lib.sh: line 31: pkg-config: command not found
  gyp: Call to './util/has_lib.sh freetype' returned exit status 0 while in binding.gyp. while trying to load binding.gyp
  gyp ERR! configure error 
  gyp ERR! stack Error: `gyp` failed with exit code: 1
  gyp ERR! stack     at ChildProcess.onCpExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:305:16)
  gyp ERR! stack     at emitTwo (events.js:87:13)
  gyp ERR! stack     at ChildProcess.emit (events.js:172:7)
  gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:200:12)
  gyp ERR! System Darwin 15.6.0
  gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
  gyp ERR! cwd /Users/User/Documents/dev/engineerappcopy/node_modules/node-resemble/node_modules/canvas
  gyp ERR! node -v v4.4.7
  gyp ERR! node-gyp -v v3.3.1
  gyp ERR! not ok 
  npm ERR! Darwin 15.6.0
  npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "i" "node-resemble"
  npm ERR! node v4.4.7
  npm ERR! npm  v2.15.8
  npm ERR! code ELIFECYCLE
  
  npm ERR! canvas@1.6.2 install: `node-gyp rebuild`
  npm ERR! Exit status 1
  npm ERR! 
  npm ERR! Failed at the canvas@1.6.2 install script 'node-gyp rebuild'.
  npm ERR! This is most likely a problem with the canvas 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 information on how to open an issue for this project with:
  npm ERR!     npm bugs canvas
  npm ERR! Or if that isn't available, you can get their info via:
  npm ERR! 
  npm ERR!     npm owner ls canvas
  npm ERR! There is likely additional logging output above.
  
  npm ERR! Please include the following file with any support request:
  npm ERR!     /Users/User/Documents/dev/engineerappcopy/npm-debug.log
  </code></pre>