Set deployment platform to 8 in Xcode and podspec

Issue #63

[#120088719]

Author: camelpunch

RMQClient.podspec

@@ -10,7 +10,7 @@ Pod::Spec.new do |s|
   s.license          = "Mozilla Public License, Version 1.1 and Apache License, Version 2.0"
   s.author           = { "RabbitMQ team" => "[email protected]" }
   s.social_media_url = "https://twitter.com/rabbitmq"
-  s.platform         = :ios
+  s.platform         = :ios, "8.0"
   s.source           = { :git => "https://github.com/rabbitmq/rabbitmq-objc-client.git", :tag => "v#{s.version}" }
   s.source_files     = "RMQClient", "RMQClient/**/*.{h,m}"
   s.dependency       "JKVValue"

RMQClient.xcodeproj/project.pbxproj

@@ -1335,6 +1335,7 @@
 				);
 				INFOPLIST_FILE = RMQClient/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = io.pivotal.RMQClient;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -1355,6 +1356,7 @@
 				);
 				INFOPLIST_FILE = RMQClient/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = io.pivotal.RMQClient;
 				PRODUCT_NAME = "$(TARGET_NAME)";