mvn clean install -U
[INFO] Scanning for projects...
Downloading from openmrs-repo: http://mavenrepo.openmrs.org/nexus/content/repositories/public/org/openmrs/distro/referenceapplication/1.9.11/referenceapplication-1.9.11.pom
Downloading from openmrs-repo-thirdparty: http://mavenrepo.openmrs.org/nexus/content/repositories/thirdparty/org/openmrs/distro/referenceapplication/1.9.11/referenceapplication-1.9.11.pom
Downloading from openmrs-bintray-repo: https://dl.bintray.com/openmrs/maven/org/openmrs/distro/referenceapplication/1.9.11/referenceapplication-1.9.11.pom
Downloading from central: http://repo1.maven.org/maven2/org/openmrs/distro/referenceapplication/1.9.11/referenceapplication-1.9.11.pom
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] Non-resolvable import POM: Could not find artifact org.openmrs.distro:referenceapplication:pom:1.9.11 in openmrs-repo (http://mavenrepo.openmrs.org/nexus/content/repositories/public) @ line 34, column 25
 @
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR]   The project org.openmrs.module:mymodule:1.0.0-SNAPSHOT (/Users/gilbertagbodamakou/mymodule/pom.xml) has 1 error
[ERROR]     Non-resolvable import POM: Could not find artifact org.openmrs.distro:referenceapplication:pom:1.9.11 in openmrs-repo (http://mavenrepo.openmrs.org/nexus/content/repositories/public) @ line 34, column 25 -> [Help 2]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException