[maven-release-plugin] prepare for next development iteration
update version in README and examples to 0.5.1-SNAPSHOT
update doc
SDKJAVA-6 #comment support itemsim engine
prepare for 0.6.0 release
[maven-release-plugin] prepare release v0.6.0-develop
Merge tag 'v0.6.0-develop'

[maven-release-plugin]  copy for tag v0.6.0-develop

Conflicts:
	README.md
	examples/import/pom.xml
	examples/import_deprecated/pom.xml
	examples/simpletasks1/pom.xml
	examples/simpletasks1_deprecated/pom.xml