Start Video without Audio Focus (PierfrancescoSoffritti#896)

* Update readme (PierfrancescoSoffritti#875)

Add Genius to the apps that are using the library

* added mute option

* added mute option

* changed wording of new method descriptions

* removed link in README.md

Co-authored-by: Pierfrancesco Soffritti <soffritti.pierfrancesco@gmail.com>

core/src/main/java/com/pierfrancescosoffritti/androidyoutubeplayer/core/player/options/IFramePlayerOptions.kt

@@ -24,6 +24,7 @@ class IFramePlayerOptions private constructor(private val playerOptions: JSONObj
     class Builder {
         companion object {
             private const val AUTO_PLAY = "autoplay"
+            private const val MUTE = "mute"
             private const val CONTROLS = "controls"
             private const val ENABLE_JS_API = "enablejsapi"
             private const val FS = "fs"
@@ -42,6 +43,7 @@ class IFramePlayerOptions private constructor(private val playerOptions: JSONObj
 
         init {
             addInt(AUTO_PLAY, 0)
+            addInt(MUTE, 0)
             addInt(CONTROLS, 0)
             addInt(ENABLE_JS_API, 1)
             addInt(FS, 0)
@@ -66,6 +68,24 @@ class IFramePlayerOptions private constructor(private val playerOptions: JSONObj
             return this
         }
 
+        /**
+         * Controls if the video is played automatically after the player is initialized.
+         * @param autoplay if set to 1: the player will start automatically. If set to 0: the player will not start automatically
+         */
+        fun autoplay(controls: Int): Builder {
+            addInt(AUTO_PLAY, controls)
+            return this
+        }
+
+        /**
+         * Controls if the player will be initialized mute or not.
+         * @param mute if set to 1: the player will start muted and without acquiring Audio Focus. If set to 0: the player will acquire Audio Focus
+         */
+        fun mute(controls: Int): Builder {
+            addInt(MUTE, controls)
+            return this
+        }
+
         /**
          * Controls the related videos shown at the end of a video.
          * @param rel If set to 0: related videos will come from the same channel as the video that was just played. If set to 1: related videos will come from multiple channels.