Remove errors and update podspec

PlaceholderKit.podspec

@@ -3,14 +3,14 @@ Pod::Spec.new do |s|
     s.version      = "0.0.1"
     s.summary      = "Create placeholder images. In Swift."
     s.homepage     = "https://github.com/simonlee2/PlaceholderKit"
-    s.description  = ""
+    s.description  = "PlaceholderKit generates images that you can use for testing during development."
   
     s.license = { :type => "MIT", :file => "LICENSE.md" }
     s.authors = {
       "Simon Lee" => "dev.simonlee@gmail.com"
     }
   
-    s.source = { :git => "https://github.com/simonlee2/PlaceholderKit", :tag => "0.0.1" }
+    s.source = { :git => "https://github.com/simonlee2/PlaceholderKit.git", :tag => "0.0.1" }
     s.source_files = "Sources"
   
     s.platforms = { :ios => "8.0", :osx => "10.11", :tvos => "9.0", :watchos => "3.0" }

Sources/PlaceholderKit.swift

@@ -23,7 +23,7 @@ public struct PlaceholderFactory {
         switch settings.background {
         case .solidColor(let color):
             return Image.createPlaceholder(withColor: color, size: settings.size)
-        case .image(let image):
+        case .image:
             return nil
         }
     }