deploy snapshot version 2.3.1

Author: wing328

.travis.yml

@@ -87,10 +87,10 @@ script:
 
 #after_success:
   # push a snapshot version to maven repo
-  #- if [ $SONATYPE_USERNAME ] && [ -z $TRAVIS_TAG ] && [ "$TRAVIS_BRANCH" = "master" ]; then
-  #    mvn clean deploy --settings .travis/settings.xml;
-  #    echo "Finished mvn clean deploy for $TRAVIS_BRANCH";
-  #  fi;
+  - if [ $SONATYPE_USERNAME ] && [ -z $TRAVIS_TAG ] && [ "$TRAVIS_BRANCH" = "master" ]; then
+      mvn clean deploy --settings .travis/settings.xml;
+      echo "Finished mvn clean deploy for $TRAVIS_BRANCH";
+    fi;
 
 env:
   - DOCKER_GENERATOR_IMAGE_NAME=swaggerapi/swagger-generator DOCKER_CODEGEN_CLI_IMAGE_NAME=swaggerapi/swagger-codegen-cli