Bump Xcodeproj dependency to 0.2.0.rc1

cocoapods.gemspec

@@ -36,7 +36,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'json',      '~> 1.7.3'
   s.add_runtime_dependency 'open4',     '~> 1.3.0'
   s.add_runtime_dependency 'rake',      '~> 0.9.0'
-  s.add_runtime_dependency 'xcodeproj', '~> 0.1.0' # TODO update to RC1 for 0.6.0.rc1
+  s.add_runtime_dependency 'xcodeproj', '~> 0.2.0.rc1'
 
   s.add_development_dependency 'bacon', '~> 1.1'