Use the podfile to setup the (ignored) dependencies, `pod install` should be all you need, then open the .xcworkspace file in xcode.
We use clang-format in the form of the ClangFormat-Xcode plugin (https://github.com/travisjeffery/ClangFormat-Xcode) for style consistency. Please set your formatting tool to use the WebKit style (http://www.webkit.org/coding/coding-style.html).