Added FLAnimatedImage as submodule

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "Vendors/libwebp"]
 	path = Vendors/libwebp
 	url = https://github.com/webmproject/libwebp
+[submodule "Vendors/FLAnimatedImage"]
+	path = Vendors/FLAnimatedImage
+	url = git@github.com:Flipboard/FLAnimatedImage.git

Vendors/FLAnimatedImage

@@ -0,0 +1 @@
+Subproject commit 25307796cfcf66cb5b98774e050e93f64e0f2cde