added data files

Author: abidrahmank

.gitignore

@@ -1,3 +1,5 @@
 build
 build/
 build/*
+*~
+

data/butterfly.jpg

@@ -0,0 +1,19 @@
+This folder contains data files used in these tutorials.
+
+Not all files are available. I had to format my system and lost many files. Some are taken from internet and I have put them in this folder. Some files are my own, so no way to recover them. 
+
+Some video files are also missing.
+
+Image
+-------
+lena.jpg
+butterfly.jpg
+home.jpg
+messi5.jpg
+left.jpg
+right.jpg
+
+Feature Matching	-	https://github.com/Itseez/opencv/blob/master/samples/c/box.png
+			-	https://github.com/Itseez/opencv/blob/master/samples/c/box_in_scene.png
+
+Background subtraction	-	https://github.com/Itseez/opencv/blob/master/samples/gpu/768x576.avi