Update Xcode project files for Xcode6
Section adpaters initial seed type verification origin.

Section parser (section adapters) tests origin.
Separate RecognizeSection() and revisit it as HasSectionKeywordSignature()

The `HasSectionKeywordSignature()` query a Markdown AST node for any keyword-defined section signature.
Remove superfluous test
Remove unnecessary header
Merge pull request #122 from apiaryio/zdne/arch-refactor

Signature recognition & Adapter robustness
ActionParser refactor