Update room_toolbar.xml

rocket-chat-android-widgets/src/main/res/layout/room_toolbar.xml

 <?xml version="1.0" encoding="utf-8"?>
-<merge xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="?attr/actionBarSize"
+    app:titleTextColor="@android:color/white"
+    android:background="@color/color_accent">
+
+
+    <android.support.constraint.ConstraintLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
-    <TextView
+        <ImageView
+            android:id="@+id/roomIconImageView"
+            android:layout_width="10dp"
+            android:layout_height="10dp"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintRight_toLeftOf="@+id/toolbar_title"/>
+
+        <TextView
             android:id="@+id/toolbar_title"
             android:layout_width="wrap_content"
-            android:layout_height="match_parent"
-            android:gravity="center_vertical"/>
-
-</merge>
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="10dp"
+            android:layout_marginStart="10dp"
+            app:layout_constraintLeft_toRightOf="@+id/roomIconImageView"
\ No newline at end of file
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            style="@style/TextAppearance.AppCompat.Widget.ActionBar.Title"/>
+    </android.support.constraint.ConstraintLayout>
+</android.support.v7.widget.Toolbar>
\ No newline at end of file