update Readme.md

added samples visuals

README.md

   - **Updated HD Render Pipeline / Visual Effect Graph to 12.1.1**
   
   - **Notable Changes : **
-    - Added GooBall Sample
+    - Added **GooBall** Sample
     
     - Jacob's ladder effect excluded from TAA for better rendering (MagicBook Sample)
     
       - Linux build: "Vulkan - out of memory" issue
+ 
+![gif](https://media4.giphy.com/media/8FH6dhA2saLF2fKEGd/giphy.gif?cid=790b7611660d4029418c8424f97970330e4e516f55aa960f&rid=giphy.gif&ct=g)
-    - Added Ellen Skinned Mesh Sample
+    - Added **Ellen Skinned Mesh** Sample
+
+![gif](https://media2.giphy.com/media/Gtd18yGr8VDXTlkXrp/giphy.gif?cid=790b76115e1d6c810a6be3cbc2b008adf5b3b02722dc9115&rid=giphy.gif&ct=g) ![gif](https://media2.giphy.com/media/4b5yl3UUwezYfIxXcD/giphy.gif?cid=790b76111b77bd82988378d68a829ee3b50e5a71642435f9&rid=giphy.gif&ct=g)
+
-    - Added Meteorite Sample
+    - Added **Meteorite** Sample
+
+![gif](https://media.giphy.com/media/HWeVbv69k5t6UWZVmE/giphy-downsized.gif)
 
 - #### 2020.2 Release 1 : (10.2.2 rev1 2020-12-15)
 
     - Rebuilt all Visual Effects
     - Upgraded all HDRP materials to 7.2.1
     - Added **Magic Book** Sample
+
+![gif](https://media3.giphy.com/media/62fU5KhQEZSeAfNt42/giphy.gif?cid=790b76114fbe0d8ccad2925f5664924d6d2f2d539f736d33&rid=giphy.gif&ct=g)
 
 - #### 2019.3 Update: (7.2.0 rev1 2020-02-12)
 
     - Ellen Hologram not working properly on macOS/metal
     - Linux Vulkan rendering is mostly broken
 
+![gif](https://media.giphy.com/media/rQRZxpCNfht61L4wWx/giphy.gif) ![gif](https://media2.giphy.com/media/fZ6CFaINka2dcuVMrC/giphy.gif?cid=790b7611b9c32508fdc0c0ab50a337025226e4456e91d573&rid=giphy.gif&ct=g) ![gif](https://media.giphy.com/media/tq0UxWC90n7jty5mZ1/giphy.gif)
+
-    - Spaceship Holo Table : Holographic Pin-Screen effect isolated from the [Spaceship Demo](https://www.youtube.com/watch?v=rqMcPZoEc3U)
+     - **Spaceship Holo Table** : Holographic Pin-Screen effect isolated from the [Spaceship Demo](https://www.youtube.com/watch?v=rqMcPZoEc3U)
 
   - **General Improvements**
     - Upgraded all project, volumes, postprocesses and scenes to 2019.1 package track
   - **Fixes**
     - General Performance adjustments
 
+![gif](https://media.giphy.com/media/4BMXmbhHMYi4wWLL61/giphy.gif)
+
-    - Genie: Magic flow gushing out of the Magic lantern and taking the shape of a Genie
-    - AR Radar : Lines and Dots that form a Radar Grid with multiple Targets
-    - Voxelized Terrain : Interactive Terrain 
+    - **Genie**: Magic flow gushing out of the Magic lantern and taking the shape of a Genie
+    - **AR Radar** : Lines and Dots that form a Radar Grid with multiple Targets
+    - **Voxelized Terrain** : Interactive Terrain 
   - **Fixes and General Improvements:**
     - Simplified Sample Loader Script
     - GrassWind : Fixed the sample to reflect the fixes in ConnectTarget
+![gif](https://media.giphy.com/media/DeMUSeLVpgNmoxbOAM/giphy.gif) ![gif](https://media.giphy.com/media/FcLcjtljIcHMTBAbaH/giphy.gif) ![gif](https://media.giphy.com/media/3Bj5alkTJdJHA8uuzV/giphy.gif)
+
 - #### Second Release ( 4.6.0-preview rev1 - 2019-01-07 )
 
   - **New Samples**
     - Fixed Missing references to VectorField and Texture in UnityLogo template
     - Removed unused HDRP Resources file (now using default one)
 
+![gif](https://media.giphy.com/media/GlqT7PZie6B6dGP7P7/giphy.gif) ![gif](https://media.giphy.com/media/ONg2Gcg0eiwlYT5XP9/giphy.gif) ![gif](https://media.giphy.com/media/XBbqp2r0VZMZhNozsJ/giphy.gif)
+
 - #### First Release ( 4.3.0-preview rev1 - 2018-11-27 )
 
   - **Base Project** and 3 Samples
 
+![gif](https://media.giphy.com/media/A3Wrp9a25ZLaiWKoaD/giphy.gif) ![gif](https://media.giphy.com/media/vJ9woB5KF5AWHYpnDe/giphy.gif) ![gif](https://media.giphy.com/media/5KclpM4YSv76t1b1EU/giphy.gif)