Updating contributing file
Merge pull request #21 from florianv/contributing

Updating contributing file
updating readme
Merge pull request #23 from florianv/readme

updating readme [ci skip]
README : updating developer link
Merge pull request #24 from florianv/readme2

README : updating developer link
Move JsonSerializable to Joomla/Compat
Removing placeholder autoload. Fixing json parse error in registry/composer.json
Adding subsplit command. Update this when new packages are created.
Removed deprecated loadNextObject methods and related tests
Merge pull request #25 from Skullbock/master

Started removing deprecated code. Refs #18
Make Utilities package tests standalone.
Make the Registry package tests standalone.
Make tests in Data package run standalone.
Removed loadNextRow method. Refs #18
Removed JFile::getName. Refs #18
Removed $_errors var from Stream. Refs #18
Fix typo in package name.
Removed setError from Stream
Add joomla/string to Utilities package dependancies.