Simplify podspec (#334)

GCDWebServer.podspec

@@ -34,23 +34,19 @@ Pod::Spec.new do |s|
   end
   
   s.subspec 'WebDAV' do |cs|
-    cs.subspec "Core" do |ccs|
-      ccs.dependency 'GCDWebServer/Core'
-      ccs.source_files = 'GCDWebDAVServer/*.{h,m}'
-      ccs.requires_arc = true
-      ccs.ios.library = 'xml2'
-      ccs.tvos.library = 'xml2'
-      ccs.osx.library = 'xml2'
-      ccs.compiler_flags = '-I$(SDKROOT)/usr/include/libxml2'
-    end
+    cs.dependency 'GCDWebServer/Core'
+    cs.source_files = 'GCDWebDAVServer/*.{h,m}'
+    cs.requires_arc = true
+    cs.ios.library = 'xml2'
+    cs.tvos.library = 'xml2'
+    cs.osx.library = 'xml2'
+    cs.compiler_flags = '-I$(SDKROOT)/usr/include/libxml2'
   end
   
   s.subspec 'WebUploader' do |cs|
-    cs.subspec "Core" do |ccs|
-      ccs.dependency 'GCDWebServer/Core'
-      ccs.source_files = 'GCDWebUploader/*.{h,m}'
-      ccs.requires_arc = true
-      ccs.resource = "GCDWebUploader/GCDWebUploader.bundle"
-    end
+    cs.dependency 'GCDWebServer/Core'
+    cs.source_files = 'GCDWebUploader/*.{h,m}'
+    cs.requires_arc = true
+    cs.resource = "GCDWebUploader/GCDWebUploader.bundle"
   end 
 end