title: Error when installing and launching cevelop for first time on mac
body: <p>I am trying to install Cevelop on my mac (Sierra 10.12.6) and after downloading and installing Cevelop from the download site and trying to launch, I am getting the following error log. I have installed Java 8. </p>
  
  <p>What am I doing wrong?</p>
  
  <pre><code>!SESSION Thu Jan 04 15:20:08 JST 2018 -------------------------------
  !ENTRY org.eclipse.equinox.launcher 4 0 2018-01-04 15:20:08.563
  !MESSAGE Exception launching the Eclipse Platform:
  !STACK
  java.lang.UnsupportedClassVersionError: 
  org/eclipse/core/runtime/adaptor/EclipseStarter : Unsupported 
  major.minor version 51.0
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
      at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
      at 
  java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
      at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
      at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:650)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
  </code></pre>