Use the version of CocoaPods-Core.
Remove old docs task.
[Docs] Fixed yard warnings.
Improved support for CocoaPods-Core version.
Merge branch 'master' into 0.17

* master:
  Added tests for Subversion dependencies
  Forced non-interactive and trust server certificate
  Updated to latest output mechanism
  Added SvnSource podspec to Subversion fixture repo
  Fixed a little mistake in the svn pre-download description
  Added support for pre-download over SVN (fixes #524)
  Tiny docs fix to reflect being able to handle either spelling of Licen{c,s}e

Conflicts:
	lib/cocoapods/dependency.rb
	spec/unit/dependency_spec.rb
[Command::Project] Include options in subcommands.
[Command] Fix issue that lead to ignoring the --verbose option.
Move Command::ErrorReport to UI::ErrorReport.
Rename Advanced Linter to Validator and integrate with Core extraction.
Bundle update.
More specs fixes.
[Validator] Minor clean up.
[Command::Spec#lint] Show Pods project path with '--no-clean' option.
[LocalPod] Fix compiler flags.
Improved architecture.

- Moved Project::Library to Pod::Library.
- Removed logic from Pod::Library.
- Restored logic for user build configurations.
- CocoaPods now can infer the platform from the user targets.
Extracted downloader.
Added Pod::SourcesManager class.

- handles source logic in a central place.
- the installer does not need to run `pod repo update` anymore.
- similar argument for `pod setup` which now has programmatic access to almost all the needed methods.
- removes a lot of duplicated class-instance methods in the subcommands.
Merge branch 'master' into 0.17

* master:
  corrected some typos
  [Spec] Make green by updating Reachability fixture.
  Fix RubyGems version too old error message to show current version instead of hardcoded value.

Conflicts:
	lib/cocoapods/specification.rb
Remove the Rubygems version check as now it is handled by cocoapods-core.
[Informative] Simplify message handling.