How to specify the path of `package.json` to npm? : <p>I use <code>npm</code> scripts to build my project.  I'd like to be able to run the scripts from a different directory.  That is, instead of doing the following:</p>

<pre><code>cd project;
npm run build;
cd ..
</code></pre>

<p>...I'd like to simply do something like:</p>

<pre><code>npm run build -config project/package.json;
</code></pre>

<p>or</p>

<pre><code>npm run build -wd project;
</code></pre>

<p>Is this possible?</p>
