Merge pull request #413 from stylight/master

Fixed dependency on libwebp in the podspec

@@ -8,7 +8,7 @@ Pod::Spec.new do |s|
   s.author = { 'Olivier Poitrey' => 'rs@dailymotion.com' }
   s.source = { :git => 'https://github.com/rs/SDWebImage.git', :tag => '3.2' }
 
-  s.description = 'This library provides a category for UIImageVIew with support for remote '      \
+  s.description = 'This library provides a category for UIImageView with support for remote '      \
                   'images coming from the web. It provides an UIImageView category adding web '    \
                   'image and cache management to the Cocoa Touch framework, an asynchronous '      \
                   'image downloader, an asynchronous memory + disk image caching with automatic '  \
@@ -20,6 +20,8 @@ Pod::Spec.new do |s|
   s.source_files = 'SDWebImage/{NS,SD,UI}*.{h,m}'
   s.framework = 'ImageIO'
 
+  s.dependency 'libwebp'
+
   # TODO currently CocoaPods always tries to install the subspec even if the dependency is on just 'SDWebImage'
   s.subspec 'MapKit' do |mk|
     mk.source_files = 'SDWebImage/MKAnnotationView+WebCache.*'