Update README.md (#279)

* 3.0.1 (#237)

* feat: added cancel for ux (#198)

* feat: added cancel for ux

* re(feat): apply cancel functionality to merged

* fix: return true

* fix(syntax): flashButton and cancelButton

* fix: syntax

* Changelog updated

* add fix for autofocus with logging

* add comment and remove log for merge on master project

* Update the 3.x branch (#229)

* Update issue templates

* Update UPGRADE.md

* Fix camera selection in Android.

* CHANGELOG updated

* Release prepared

Co-authored-by: Ivan Ray Altomera <iRaySpace@users.noreply.github.com>
Co-authored-by: Vincenzo <vincenzo.salerno@live.it>
Co-authored-by: GabrieleVolpato <6254043+GabrieleVolpato@users.noreply.github.com>

* Update issue templates

* Scan Options Descriptions correction. (#270)

* Update README.md

Update Kotlin plugin installation link, add protobuf-gradle-plugin dependency for Gradle build

Co-authored-by: Julian Finkler <julian@mintware.de>
Co-authored-by: Ivan Ray Altomera <iRaySpace@users.noreply.github.com>
Co-authored-by: Vincenzo <vincenzo.salerno@live.it>
Co-authored-by: GabrieleVolpato <6254043+GabrieleVolpato@users.noreply.github.com>
Co-authored-by: Julian Finkler <julian@developer-heaven.de>
Co-authored-by: Muzammil Bilwani <muzammil.bilwani@hotmail.com>

README.md

@@ -28,7 +28,7 @@ For Android, you must do the following before you can use the plugin:
 
      `<uses-permission android:name="android.permission.CAMERA" />`
 
-* This plugin is written in Kotlin. Therefore, you need to add Kotlin support to your project. See [installing the Kotlin plugin](https://kotlinlang.org/docs/tutorials/kotlin-android.html#installing-the-kotlin-plugin).
+* This plugin is written in Kotlin. Therefore, you need to add Kotlin support to your project. See [installing the Kotlin plugin](https://developer.android.com/kotlin/add-kotlin).
 
 Edit your project-level build.gradle file to look like this:
 ```groovy
@@ -38,6 +38,7 @@ buildscript {
     dependencies {
         // ...
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.12'
     }
 }
 // ...