title: Probabilistic soft logic (PSL) through maven downloading error
body: <p>I am trying to download PSL (Probabilistic Soft Logic :Groove for Intermediate Users)  through Maven but I am not able to download it it gives me the following Error<br>
  <strong>Failed to execute goal org.apache.maven.plugins:maven-archetype-plugin:3.0.0:generate (default-cli) on project standalone-pom: The desired archetype does not exist (edu.umd.cs:psl-archetype-example:1.2.1</strong><br>
  I am using windows and following the procedure as stated in this<br>
  <a href="https://github.com/linqs/psl/wiki/Installing-examples" rel="nofollow noreferrer">https://github.com/linqs/psl/wiki/Installing-examples</a></p>
  
  <p>My maven command is as follows<br>
  mvn archetype:generate -DarchetypeArtifactId=psl-archetype-example -DarchetypeRepository=<a href="https://scm.umiacs.umd.edu/maven/lccd/content/repositories/psl-releases/" rel="nofollow noreferrer">https://scm.umiacs.umd.edu/maven/lccd/content/repositories/psl-releases/</a> -DarchetypeGroupId=edu.umd.cs -DarchetypeVersion=1.2.1</p>
  
  <p>I am using Apache Maven 3.3.9 and Java 1.8.0</p>