title: why there are errors when i install solc compiler with npm?
body: <p>with the latest version of npm but i cant install compiler successfully.</p>
  
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  <pre class="snippet-code-js lang-js prettyprint-override"><code>ash@ubuntu:~/inbox$ node -v
  v8.11.1
  ash@ubuntu:~/inbox$ npm -v
  5.8.0
  ash@ubuntu:~/inbox$ sudo npm install --save solc
  npm WARN saveError ENOENT: no such file or directory, open '/home/ash/inbox/package.json'
  npm WARN enoent ENOENT: no such file or directory, open '/home/ash/inbox/package.json'
  npm WARN webpack-cli@2.0.14 requires a peer of webpack@^4.0.0 but none is installed. You must install peer dependencies yourself.
  npm WARN inbox No description
  npm WARN inbox No repository field.
  npm WARN inbox No README data
  npm WARN inbox No license field.
  
  + solc@0.4.21
  updated 1 package in 5.593s
  ash@ubuntu:~/inbox$ </code></pre>
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  <p><a href="https://i.stack.imgur.com/FsV0B.png" rel="nofollow noreferrer">enter image description here</a></p>