Update Example to use iOS 9

Author: dreampiggy

Podfile

@@ -5,13 +5,13 @@ test_project_path = 'Tests/SDWebImageWebPCoderTests'
 workspace 'SDWebImageWebPCoder.xcworkspace'
 
 target 'SDWebImageWebPCoderExample' do
-  platform :ios, '8.0'
+  platform :ios, '9.0'
   project example_project_path
   pod 'SDWebImageWebPCoder', :path => './'
 end
 
 target 'SDWebImageWebPCoderTests' do
-  platform :ios, '8.0'
+  platform :ios, '9.0'
   project test_project_path
   pod 'Expecta'
   pod 'SDWebImageWebPCoder', :path => './'