Drop Ruby < 2.0.0 support.

Ruby >= 2.0.0 comes with the C json lib in stdlib.
[bundle] Update
[CHANGELOG] Document Ruby >= 2.0.0 support.
Fixing subspec documentaiton typo
Merge pull request #191 from kleinlieu/patch-1

Fixing subspec documentaiton typo
[Travis] Run on all Ruby versions that come with 10.9 and 10.10.
[Travis] Make build green.
[Travis] Make build green, take 2.
[CHANGELOG] Fix header level of Breaking
[bundle] Explicitely test against json version that comes with OS X.
[Dependency][Specification] Add #from_subspec_dependency attribute
Merge pull request #192 from CocoaPods/seg-from-subspec-dependencies

[Dependency][Specification] Add #from_subspec_dependency attribute
[Podspec DSL] HTTP may have flatten option.

Fixes #193
Release 0.35.0.rc1
Revert "[Dependency][Specification] Add #from_subspec_dependency attribute"

This reverts commit afa6cd5ea769a8044d36a002f7e1e2ec2710da00.
Update documentation regarding requires_arc default

It's been true by default for a release or two.

Closes https://github.com/CocoaPods/cocoapods.org/issues/102
Merge remote-tracking branch 'origin/scope-dependencies-by-consumer'
[Source] Fix exception message in #specification_path
[Set] Add new Head subclass
Merge pull request #194 from CocoaPods/seg-fix-head-pods

[Set] Add new Head subclass