Removed a check, because of which a TGZ file was *always* created.
Changed dirname($sourcepath) into just $sourcepath, thus allowing creation of packages (in general).
Reordered the main file detection into one that allows for the creation of any and all archives (based on the current code in \Pyrus\Package\Cloner): phar, tar, tgz, zip.
Moved the cloner creation to only happen after main file detection is complete, and only if cloning is actually needed.
Merge pull request #18 from boenrobot/patch-1

Fixes for packaging (with pyrus make)