Added goal to maven in usage docs
<h2>Building &amp; Running</h2>
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<a name="build-1"></a><h4>Building</h4>
- <p>Recaf can be built by executing <span class="code">mvn package</span>. All dependencies but one should be available on the central maven repository. The other <i>(CFR)</i> is provided in the <i>"dependencies"</i> folder.</p>
+ <p>Recaf can be built by executing <span class="code">mvn compile package</span>. All dependencies but one should be available on the central maven repository. The other <i>(CFR)</i> is provided in the <i>"dependencies"</i> folder.</p>
<a name="build-2"></a><h4>Running</h4>
<p>Once Recaf has been built it can be executed by:</p>
<ul>
