Update and rename Screen-space-Reflections.md to Screen-Space-Reflections.md

Edited the document and linked to the manual

Author: jo-unity

Documentation~/Screen-Space-Reflections.md

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+# Screen Space Reflections 
+
+The **Screen Space Reflection** effect creates subtle reflections that simulate wet floor surfaces or puddles. Screen Space Reflection is an ideal effect to limit the amount of [specular light](https://docs.unity3d.com/Manual/shader-NormalSpecular.html) leaking. For further information on the **Screen Space Reflection** effect see the [Screen Space Reflection](https://docs.unity3d.com/Manual/PostProcessing-ScreenSpaceReflection.html) documentation in the Unity manual.
+
+
+![](images/ssr.png)
+
+
+### Properties
+
+| Property                | Function                                                     |
+| :----------------------- | :------------------------------------------------------------ |
+| Preset                  | Select the quality preset from the dropdown. Use `Custom` to fine tune the quality.   |
+| Maximum Iteration Count (`Custom` preset only) | Set the maximum number of steps in the raymarching pass. Higher values mean more reflections.|
+| Thickness (`Custom` preset only)| Set the value of the Ray thickness. Lower values are more resource-intensive but detect smaller details. |
+| Resolution (`Custom` preset only)| Select the size of the internal buffer. Select Downsample to maximize performance. Supersample is slower but produces higher quality results. |
+| Maximum March Distance  | Set the maximum distance to traverse in the scene after which it will stop drawing reflections. |
+| Distance Fade           | Set the value for the distance to fade reflections close to the near plane. This is useful to hide common artifacts. |
+| Vignette                | Select the value to fade reflections close to the screen edges.                 |
+
+### Performances
+
+Only use the `Custom` preset for beauty shots. If you are developing for consoles, use `Medium` as the maximum, unless you have plenty of GPU time to spare. On lower resolutions you can boost the quality preset and get similar timings with a higher visual quality.
+
+### Known issues and limitations
+
+- Screen-space reflections doesn't support AR/VR.
+
+### Requirements
+
+- Compute shader
+- Motion vectors
+- Deferred rendering path
+- Shader Model 5.0
+
+See the [Graphics Hardware Capabilities and Emulation](https://docs.unity3d.com/Manual/GraphicsEmulation.html) page for further details and a list of compliant hardware.