Merge pull request #26 from keithel/xcode6.1-support

Fix XCode simulator build for XCode 6.1

Author: biasedbit

lib/curl_builder/compiler.rb

@@ -92,7 +92,10 @@ def sdk_version_for(platform)
     end
 
     def compilation_flags_for(platform, architecture)
-      if platform == "iPhoneOS" || platform == "iPhoneSimulator"
+      if platform == "iPhoneSimulator"
+        version = "6.0"
+        min_version = "-miphoneos-version-min=#{version}"
+      elsif platform == "iPhoneOS"
         version = architecture == "arm64" ? "6.0" : "5.0"
         min_version = "-miphoneos-version-min=#{version}"
       else