OPENICF-209 Fixed the README file

git-svn-id: https://svn.forgerock.org/openicf/trunk@6682 05b3e5af-d696-470f-a577-fd7599f74d3c
Branch the openicf-maven-plugin-1.2.x and update its version

git-svn-id: https://svn.forgerock.org/openicf/trunk@6683 05b3e5af-d696-470f-a577-fd7599f74d3c