Merge branch 'master' of https://github.com/lennet/image-filtering

Author: lennet

README.md

@@ -1,5 +1,7 @@
 A Swift playgroundbook about Image Filtering
 
+Subscription feed: https://raw.githubusercontent.com/lennet/image-filtering/master/feed.json
+
 ![A Gif that shows the convolution of an pixelated unicorn with a blurring filter](playgroundDemo.gif)
 
 ![A Gif that shows edge detection of an staircase with the laplcian of gaussian filter](playgroundDemo2.gif)

banner_2x.png

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+{
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+		{
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+			"bannerImageURL": "https://raw.githubusercontent.com/lennet/image-filtering/master/banner_2x.png",
+			"thumbnailURL": "https://raw.githubusercontent.com/lennet/image-filtering/master/Image%20Filtering.playgroundbook/Contents/Resources/Private/cover.png",
+			"subtitle": "Learn about image filtering",
+			"description": "Many people think that digital signal processing is very complicated and quickly get deterred by mathematical formulas.  This  Playgroundbook shows that the fundamental concepts of DSP are way easier than they might look like with the example of convolving images with filter kernels.",
+			"publishedDate": "2017-11-14T12:00:00+00:00",
+			"url": "https://github.com/lennet/image-filtering/releases/download/1.0/Image.Filtering.playgroundbook.zip",
+			"additionalInformation": [
+				{
+					"name": "Publisher:",
+					"value": "Leonard Thomas"
+				},
+				{
+					"name": "Version:",
+					"value": "1.0"
+				},
+				{
+					"type": "date",
+					"name": "Released:",
+					"value": "2017-11-14T12:00:00+00:00"
+				},
+				{
+					"name": "Languages:",
+					"value": "English"
+				}
+			],
+			"title": "Image Filtering",
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