Remove extension of the base file (.ipa in most cases) in the path for embedded.mobileprovision

The path for embedded.mobileprovision used to look like this:
Payload/Kiki.ipa.app/embedded.mobileprovision (bad)
it's now:
Payload/Kiki.app/embedded.mobileprovision (good)
Make sure RubyZip can override tempfile while extracting embedded.mobileprovision
Merge pull request #113 from mgamer/master

Fix displaying info for embedded provisioning profile