This also fixes a failure on Travis.

Apperantly OS X's BSD tar accepts the x option even if the archive is not a gzip archive.

I run pod search not from directory with xcode project and it there was
an error with reading podfile. Than I added check for existence of
podfile. [#177]

to prevent broken syntax highlighting in emacs (and maybe in another
editors too)

see
https://github.com/CocoaPods/CocoaPods/commit/9bb3e73e2e53017fc292af979adbdaa17fb34916#commitcomment-1125216
for details

it will return a nil exit status.

cause breakage if they have been updated recently.

* origin:
  Removed unrelated experimental changes to local_pod.rb
  [#153] Relaxed run if needed
  [#153] Hide pod setup
  [#179] Support for :local pods outside the sanbox

* master:

Hidden setup

* origin:
  Erroneously deleted + on self.options
  [#177] @alloy's suggestions
  Revert .git behaviour and refactoring
  [fix] Support for dashes in GitHub repo and author
  [#177] Fix for GitHub repos missing final .git in the source
  [#177] Added --extended option
  Tweaks to regex and coloring
  [#177] Search command improvements

* master:

Improved search

* master:
  [#184] fix for documentation options
  [#180] check appledoc exit status

* master:
  [#184] fix for documentation options
  [#180] check appledoc exit status
  [#112] Refactoring based on suggestions by @alloy
  [#112] Improved remote url detection for spec repo
  [#132, #183] Fix to make repo update tolerant of stray files ~./cocoapods
  [#112] Introduced --push option for setup command

* master:
  [#112] Refactoring based on suggestions by @alloy
  [#112] Improved remote url detection for spec repo
  [#132, #183] Fix to make repo update tolerant of stray files ~./cocoapods
  [#112] Introduced --push option for setup command