fixing issue #9: https://github.com/miho/VWorkflows/issues/9

- checks for main connectors was broken.

TODO: add additional test cases
tests for issue #9 and connection events
tests improved
Update README.md
version updated (maven upload done)
version updated (maven upload done)
gradle version updated
gradle version updated
Merge branch 'master' of github.com:miho/VWorkflows
gradle version updated
Java 8 maven coordinates added
fix for issue #10: https://github.com/miho/VWorkflows/issues/10

we use relative tesfile location now
Update README.md
Update .gitignore
core tests updated (compared wrong connectors in VFlowTest)
hunting skinfactory related bugs
hunting skinfactory related bugs
fix for issue #11: https://github.com/miho/VWorkflows/issues/11
changed demo to ensure that issue #11 is really fixed.
highly increased quality of io related functionality:
- new load and save methodsimplemented
- io tests improved