Updating documentation to v1.6.1 minor release

Fixing python demo 6, where the multivariate array conversion wasn't …

…working for Python3 with Jpype. Fixed to use recommended array conversion as per UseInPython wiki. Addresses issue raised in PR #87 also.

Updating readme-template.txt and ready for release v1.5

Changing links in readme.md to v1.4, and final update of readme for t…

…he release

Updating readme information and release notes ready for release

Fixed links in README.md