title: EACCES: permission denied, rmdir 'build'
body: <p>I'm attempting to install nodehun.</p>
  
  <p>I get the following error after researching and debugging for 5 hours:</p>
  
  <blockquote>
    <p>nodehun@2.0.12 install /usr/lib/node_modules/npm/node_modules/node-gyp/node_modules/nodehun
    node-gyp rebuild</p>
    
    <p>gyp ERR! clean error  gyp ERR! stack Error: EACCES: permission denied,
    rmdir 'build' gyp ERR! System Linux 4.15.0-29-generic gyp ERR! command
    "/usr/bin/node"
    "/usr/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js"
    "rebuild" gyp ERR! cwd
    /usr/lib/node_modules/npm/node_modules/node-gyp/node_modules/nodehun
    gyp ERR! node -v v9.11.2 gyp ERR! node-gyp -v v3.6.2 gyp ERR! not ok 
    npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! nodehun@2.0.12
    install: <code>node-gyp rebuild</code> npm ERR! Exit status 1 npm ERR!  npm ERR!
    Failed at the nodehun@2.0.12 install script. npm ERR! This is probably
    not a problem with npm. There is likely additional logging output
    above.</p>
  </blockquote>
  
  <p>I don't know where 'build' is or why sudo or chown will not fix this error. Please help.</p>