diff --git a/README.md b/README.md
index d76d93b..ffe622a 100644
--- a/README.md
+++ b/README.md
@@ -73,18 +73,22 @@ Firstly, you should declare your view in xml file
         app:layout_constraintStart_toStartOf="parent" />
 ```
 
-Then you should add menu items to your navigation component
+Then you should add menu items to your navigation menu
+To access menu call `bottomBar.menu` on your navigation view
 
 ```kotlin
         val bottomBar: ExpandableBottomBar = findViewById(R.id.expandable_bottom_bar)
-
-        bottomBar.addItems(
-                MenuItemDescriptor.Builder(context = this)
-                        .addItem(R.id.icon_home, R.drawable.ic_bug, R.string.text, Color.GRAY)
-                        .addItem(R.id.icon_go, R.drawable.ic_gift, R.string.text2, 0xFFFF77A9)
-                        .addItem(R.id.icon_left, R.drawable.ic_one, R.string.text3, 0xFF58A5F0)
-                        .addItem(R.id.icon_right, R.drawable.ic_two, R.string.text4, 0xFFBE9C91)
-                        .build()
+        val menu = bottomBar.menu
+
+        menu.add(
+            MenuItemDescriptor.Builder(
+                this,
+                R.id.icon_home,
+                R.drawable.ic_home,
+                R.string.text, 
+                Color.GRAY
+            )
+                .build()
         )
 
         bottomBar.onItemSelectedListener = { view, menuItem ->
@@ -185,7 +189,8 @@ Then you should reference this xml file at the view attributes
     /**
      * Returns notification object
      */
-    val notification = bottomBar.getMenuItemFor(i.itemId).notification() // itemId is R.id.action_id
+    val menu = bottomBar.menu
+    val notification = menu.findItemById(i.itemId).notification() // itemId is R.id.action_id
 
    notification.show() // shows simple dot-notification
    notification.show("string literal") // shows notification with counter. Counter could not exceed the 4 symbols length
diff --git a/app/src/main/java/github/com/st235/expandablebottombar/screens/NotificationBadgeActivity.kt b/app/src/main/java/github/com/st235/expandablebottombar/screens/NotificationBadgeActivity.kt
index 97ad996..0a38f80 100644
--- a/app/src/main/java/github/com/st235/expandablebottombar/screens/NotificationBadgeActivity.kt
+++ b/app/src/main/java/github/com/st235/expandablebottombar/screens/NotificationBadgeActivity.kt
@@ -10,7 +10,6 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.graphics.ColorUtils
 import github.com.st235.expandablebottombar.R
 import github.com.st235.lib_expandablebottombar.ExpandableBottomBar
-import github.com.st235.lib_expandablebottombar.Notification
 import kotlinx.android.synthetic.main.activity_xml_declared.*
 
 class NotificationBadgeActivity : AppCompatActivity() {
diff --git a/app/src/main/java/github/com/st235/expandablebottombar/screens/ProgrammaticallyCreatedDemoActivity.kt b/app/src/main/java/github/com/st235/expandablebottombar/screens/ProgrammaticallyCreatedDemoActivity.kt
index fd34d0d..d496139 100644
--- a/app/src/main/java/github/com/st235/expandablebottombar/screens/ProgrammaticallyCreatedDemoActivity.kt
+++ b/app/src/main/java/github/com/st235/expandablebottombar/screens/ProgrammaticallyCreatedDemoActivity.kt
@@ -2,8 +2,6 @@ package github.com.st235.expandablebottombar.screens
 
 import android.graphics.Color
 import android.os.Bundle
-import android.os.Handler
-import android.os.Looper
 import android.util.Log
 import android.view.View
 import android.view.ViewAnimationUtils
diff --git a/gradle.properties b/gradle.properties
index 9966876..25ea180 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,8 +4,8 @@ android.useAndroidX=true
 
 GROUP=com.github.st235
 
-VERSION_CODE=42
-VERSION_NAME=1.3.2
+VERSION_CODE=45
+VERSION_NAME=1.4.0
 
 POM_DESCRIPTION=A new way to improve navigation in your app.
 POM_URL=https://github.com/st235/ExpandableBottomBar
diff --git a/lib-expandablebottombar/src/main/java/github/com/st235/lib_expandablebottombar/Menu.kt b/lib-expandablebottombar/src/main/java/github/com/st235/lib_expandablebottombar/Menu.kt
index 6b29666..f390f56 100644
--- a/lib-expandablebottombar/src/main/java/github/com/st235/lib_expandablebottombar/Menu.kt
+++ b/lib-expandablebottombar/src/main/java/github/com/st235/lib_expandablebottombar/Menu.kt
@@ -33,23 +33,33 @@ interface Menu: Iterable<MenuItem> {
      * Programmatically select item
      *
      * @param id - identifier of menu item, which should be selected
+     * @throws IllegalArgumentException when menu item cannot be found
      */
     @Throws(IllegalArgumentException::class)
     fun select(@IdRes id: Int)
 
     fun deselect()
 
+    /**
+     * Removes the given menu item
+     *
+     * @param id - identifier of menu item, which should be selected
+     * @throws IllegalArgumentException when menu item cannot be found
+     */
     @Throws(IllegalArgumentException::class)
     fun remove(@IdRes id: Int)
 
+    /**
+     * Removes all menu items
+     */
     fun removeAll()
 
     /**
      * Returns menu item for the given id value
      *
-     * @throws NullPointerException when id doesn't exists
+     * @throws IllegalArgumentException when menu item cannot be found
      */
     @Throws(IllegalArgumentException::class)
     fun findItemById(@IdRes id: Int): MenuItem
 
-}
\ No newline at end of file
+}
diff --git a/lib-expandablebottombar/src/main/java/github/com/st235/lib_expandablebottombar/MenuImpl.kt b/lib-expandablebottombar/src/main/java/github/com/st235/lib_expandablebottombar/MenuImpl.kt
index 119ffe8..9a80dc5 100644
--- a/lib-expandablebottombar/src/main/java/github/com/st235/lib_expandablebottombar/MenuImpl.kt
+++ b/lib-expandablebottombar/src/main/java/github/com/st235/lib_expandablebottombar/MenuImpl.kt
@@ -161,4 +161,4 @@ internal class MenuImpl(
             itemsLookup[item.id]?.setAccessibleWith(prev = prev, next = next)
         }
     }
-}
\ No newline at end of file
+}