anchor.diff:    <version>1.2.0-SNAPSHOT</version>
     <executions>
       <execution>
  -      <phase>compile</phase>
         <goals>
           <goal>compile</goal>
         </goals>
  -      <configuration>
  -        <userRepos>
  -          <userRepo>${basedir}/modules</userRepo>
  -        </userRepos>
  -        <targetModulesDirectory>${project.build.directory}/modules</targetModulesDirectory>
  -        <sources>
  -          <source>
  -            <fileset>
  -              <directory>${basedir}/src/main/ceylon</directory>
  -            </fileset>
  -          </source>
  -        </sources>
  -      </configuration>
       </execution>
     </executions>
   </plugin>
   ----
   
  +todo : document configuration options
  +
   === Run a Ceylon module
  +
  +Run `my.module/1.0` from `${project.build.directory}/modules`
   
   ----
   <plugin>
  
positive.code:         <goal>run</goal>
        </goals>
        <configuration>
          <userRepos>
            <userRepo>${basedir}/modules</userRepo>
            <userRepo>${project.build.directory}/modules</userRepo>
          </userRepos>
          <module>my.module</module>
          <version>1.0.0</version>
        </configuration>
  
negative.code: </plugin>
  ----
  
  todo : document configuration options
  