typo

Added .phar suffix which was missing

Signed-off-by: Schumacher Raphael <git@raphaelschumacher.ch>
Merge pull request #369 from rschumacher/master

typos in installation commands
Add groups write APIs
Merge pull request #372 from eko/master

Add groups write APIs
Merge remote-tracking branch 'refs/remotes/sonata-project/master'