appledoc options

* upstream/master:
  Fix .kick script for Kicker 2.5.0
  Print a template for a new ticket when an error occurs. See #163.

- refactoring
- default options for appledoc
- added command line arguments to pod install
- added option to force documentation generation with appledoc

* upstream/master:
  Update for Xcodeproj HEAD.
  Don't validate the git repo settings, as the installer cleans it out.

(Not sure which is correct behavior, but I assumed this test was wrong)

- introduced '--generate_documentation' '--install_documentation' command
  line options
- only doc installation/generation only if pod does not exists

We don't need to use Tempfile anyway, we can stick the tarball in the pod root and then delete it.

Generally speaking, this should be much faster than cloning a repository (even a shallow one)
and we can take take advantage of Github's tarball support. I've made this opt-in (using the
:download_only option) in case this breaks any existing functionality people expect (e.g. 
using submodules).

Started adding some specs for the target installer, including for this fix.