Update pom.xml

Remove references to Martin.

  <scm>
        <url>https://github.com/MartinRogalla/eis</url>
        <connection>scm:git:https://github.com/MartinRogalla/eis.git</connection>
        <developerConnection>scm:git:git@github.com:MartinRogalla/eis.git</developerConnection>
        <tag>HEAD</tag>
  </scm>