title: Scala sbt: Multiple dependencies in sbt
body: <p>I am a new user to Scala, following the way to create a scala sbt project.</p>
  <p><a href="https://www.youtube.com/watch?v=Ok7gYD1VbNw" rel="noreferrer">https://www.youtube.com/watch?v=Ok7gYD1VbNw</a></p>
  <hr />
  <p>After adding</p>
  <pre><code>libraryDependencies += &quot;org.scalatest&quot; % &quot;scalatest_2.11&quot; % &quot;2.2.4&quot; % &quot;test&quot;
  </code></pre>
  <p>to <strong>build.sbt</strong>, and refreshed the project, I got this msg.</p>
  <blockquote>
  <p>[warn] Multiple dependencies with the same organization/name but different versions. To avoid conflict, pick one version:</p>
  <p>[warn]  * org.scala-lang:scala-reflect:(2.11.2, 2.11.7)</p>
  <p>[warn]  * org.scala-lang.modules:scala-xml_2.11:(1.0.2, 1.0.4)</p>
  </blockquote>
  <p>And in <strong>build.sbt</strong>, thw word '<strong>scalatest</strong>' is red that means it's an unsolved dependencies.</p>
  <p>Should I change something in Project Setting, like scala sdk?</p>
  <p>Best Regard!</p>