add recursive flag to readme
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@@ -13,10 +13,11 @@ Screen background is filled with a scaled version of the image to prevent pure b
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## Usage
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## Usage
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```
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```
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slide [-t rotation_seconds] [-o background_opacity(0..255)] [-b blur_radius] -p image_folder
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slide [-t rotation_seconds] [-o background_opacity(0..255)] [-b blur_radius] -p image_folder -r
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```
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```
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* `image_folder`: where to search for images (.jpg files), currently non-recursively
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* `image_folder`: where to search for images (.jpg files)
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* `-r` for recursive traversal for `image_folder`
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* `rotation_seconds(default=30)`: time until next random image is chosen from the given folder
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* `rotation_seconds(default=30)`: time until next random image is chosen from the given folder
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* `background_opacity(default=150)`: opacity of the background filling image between 0 (black background) and 255
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* `background_opacity(default=150)`: opacity of the background filling image between 0 (black background) and 255
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* `blur_radius(default=20)`: blur radius of the background filling image
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* `blur_radius(default=20)`: blur radius of the background filling image
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