add CFNetwork dependency

mentioned on issue https://github.com/luisobo/Nocilla/issues/19
Merge pull request #22 from netbe/podspec-fix

add CFNetwork dependency to podspec
Also define CFNetworking for OS X
Bump version to 0.4
Cast NSInteger to long on format string
Update Kiwi to 2.0.6
String matcher
Url matcher
LSStubRequest add urlMatcher
Modify DSL to accept a matcher in the URL
Add RegexMatcher
Remove URL matcher
Coverage for LSStubRequest matchesRequest: with regexes
Fix visibility of new headers
Merge pull request #25 from luisobo/add-support-for-regexes

Add support for regexes
Bump version to 0.5
Update README
Update README
Avoid Ruby 1.9 hash syntax in Podfile
Fix spelling of "expected"