Update version to 1.2.0

 mvn versions:set -DnewVersion=1.2.0-SNAPSHOT
 mvn versions:commit
 find . -name pom.xml | xargs sed -i "" "s/1.1.0-SNAPSHOT/1.2.0-SNAPSHOT/"
 find . -name "*.sh" | xargs sed -i "" "s/1.1.0-SNAPSHOT/1.2.0-SNAPSHOT/"
 find . -name "*.md" | xargs sed -i "" "s/1.1.0-SNAPSHOT/1.2.0-SNAPSHOT/"
 find . -name "*.pom" | xargs sed -i "" "s/1.1.0-SNAPSHOT/1.2.0-SNAPSHOT/"
 find . -name "*.java" | xargs sed -i "" "s/1.1.0-SNAPSHOT/1.2.0-SNAPSHOT/"
 find . -name "*-pom.xml" | xargs sed -i "" "s/1.1.0-SNAPSHOT/1.2.0-SNAPSHOT/"