- adds JSON example to shell scripts
- adds sample JSON event
- ??? for some redundant Attribute model conditions
- updates travis with CakePHP installation
Let RESTfull only work conform the web pages (to Christophes wish),
so add/edit event apart from add/edit attribute.
(there is annotation in the code to revert back to full RESTfull and
add/edit the attribute(s) alongside add/edit the event.)