added YAML and Readme files

Author: jenisha010

app/src/main/java/com/contextu/al/circlevideo/GuideBlock.yaml

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+```
+Title: CircleVideo
+Author: Jenisha Makadiya
+Email: support@contextu.al
+TestApp: https://github.com/contextu-al/FavDish
+TestAppBranch: circlevideo
+Description: Launch Circle Video to show any video in Circle to targeted users at any time with this low-code GuideBlock
+Acknowledgements:
+Screenshot: 
+Video: https://vimeo.com/manage/videos/909526616/8efaae6607
+Extensibility: {
+  "guideBlockKey": "CircleVideo"
+}
+```
+

app/src/main/java/com/contextu/al/circlevideo/README.md

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+## circlevideo
+
+Everyone loves Confetti! This is a simple example to get you started with Contextual Extensibility without needing to hard-code your changes every time you want to celebrate with the user.
+
+1. Create an account at [Contextual Dashboard](https://dashboard.contextu.al/ "Contextual Dashboard").
+2. Install the Contextual SDK following the instructions for IOS or Android.
+3. Copy-Paste the instantiation of the Guide Component AFTER the Contextual SDK registration.
+
+**In your build.gradle add:**
+
+```
+implementation 'com.github.GuideBlocks-org:Android-GuideBlocks:0.0.4', {
+        exclude group: 'com.google.android.material'
+        exclude group: 'com.github.bumptech.glide'
+    }
+```
+
+**In your activities where you want to use GuideBlocks add (for example):**
+
+```
+import com.contextu.al.circlevideo.CircleVideoGuideBlocks
+import com.contextu.al.core.CtxEventObserver
+```
+
+for the GuideBlock you wish to use, then add 
+
+```
+        val circleVideoGuideBlocks = "CircleVideo"
+        Contextual.registerGuideBlock(circleVideoGuideBlocks).observe(this){
+            contextualContainer ->
+            if(contextualContainer.guidePayload.guide.guideBlock.contentEquals(circleVideoGuideBlocks)){
+                val circleVideoView = CircleVideoGuideBlock(this@MainActivity)
+                val contentUrl:String = contextualContainer.guidePayload.guide.contentText.text ?: ""
+                circleVideoView.show(contentUrl)
+            }
+        }
+```
+
+
+4. Build your App and Run it on a phone or
+5. Go to the Dashboard and create a guide:
+* Use this [video]( https://vimeo.com/863886653#t=0m58s "Another Guide Creation How-to") to see the steps
+* choose “Display the guides on any screen of your app” and
+* pick one of the “Standard” Contextual Announcement Templates.
+* Preview the Announcement on your Phone - it should look similar to the template
+6. Now go to the Extensibility section in the sidebar and paste in the JSON as follows:
+   `
+   {
+   "guideBlockKey": "CircleVideo"
+   }
+   `
+* Match the name in the JSON to the name of your wrapper in the code
+
+JSON editing
+ 
+<img src="https://raw.githubusercontent.com/contextu-al/FavDish/main/screenshots/confettiJSON.png" alt="Adding your Extra JSON" width="200"/>
+
+or use the Tree method of editing
+
+<img src="https://raw.githubusercontent.com/contextu-al/FavDish/main/screenshots/confettiTree.png" alt="Adding your Extra JSON" width="200"/>
+
+7. If you are still in Preview Mode, then you should see the Announcement will magically change to confetti
+8. Change the Title and Content and buttons. Play around with it and see the results.
+9. Save the guide and show to your Product Team, once you release this version of the App they can launch confetti to whoever they want, whenever they want.
+