fix for php7 (#9)

Fix error "Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/europa/euwtdashboard/vendor/ec-europa/itopapi/src/ITopClient.php on line 98"

Merge pull request #3 from ec-europa/fixTest

disable save test

Last coding standard fixes

Merge pull request #1 from ec-europa/1.0

Releasing 1.0

Badly broken iTopClient by releasing unfinished work, reverting

Added error management by throwing exceptions when return code != 0

Updated composer.json with usefull informations

- Removed obsolete tests

- Added coreCreate option, thus finishing the implementation of the API
- Updated/Create documentation

Bug fix, key parameter is required !

Nobody will use core/get alone anyway ;)