Updating composer.json

- Yanking out hard-coded "version" key. This will cause a lot of problems/issues. Latest composer will also warn about this when you do "composer validate".
- updating psr-0 block and yanking out the stuff we shouldn't be registering. pdepend should register it's own autoload stuff.
- include-path seems conflicting to the autoload and probably unnecessary.
Merge pull request #190 from gena01/patch-1

Updating composer.json