Correcting link in readme

MINT-1585
Updating pom.xml with Sonatype requirements
Merge pull request #3 in MINT/java-checkout from MINT-1585_sonatype_central_repository to v1.1

* commit 'fb2abd1fb06785699ffc7f47f78507c688bad2c7':
  Updating pom.xml with Sonatype requirements
  Correcting link in readme