Fixing a variety of issues with the Phergie event classes.

* Lacking a composer decription file
* Event and EventInterface relied on \Phergie\ConnectionInterface, which is not a dependency
* EventInterface had a syntax error on the setConnection line
* ParserConverter was using a typoed classname ("TargtedEvent")
* Namespacing was inconsistent with directories
* Traits cannot implement interfaces - no need for traits here anyway.