FAB and notification creation fragment

app/src/main/res/layout/main_activity.xml

@@ -1,8 +1,33 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.design.widget.CoordinatorLayout 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="match_parent">
 
-    <include layout="@layout/toolbar" />
+    <android.support.design.widget.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+        <include layout="@layout/toolbar" />
+    </android.support.design.widget.AppBarLayout>
 
-</FrameLayout>
+    <FrameLayout
+        android:id="@+id/main_menu_fragment_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <android.support.design.widget.FloatingActionButton
+            android:contentDescription="@string/fab_cd_create_notification"
+            android:layout_gravity="bottom|end|right"
+            android:id="@+id/main_menu_fab_add_notification"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:fabSize="normal"
+            android:src="@drawable/ic_action_add"
+            android:layout_marginBottom="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_marginRight="8dp"/>
+
+    </FrameLayout>
+
+
+</android.support.design.widget.CoordinatorLayout>

app/src/main/res/layout/toolbar.xml

@@ -7,4 +7,5 @@
     app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
     app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
     android:layout_width="match_parent"
-    android:layout_height="?attr/actionBarSize" />
+    android:layout_height="?attr/actionBarSize"
+    app:layout_scrollFlags="scroll|enterAlways"/>

app/src/main/res/values/strings.xml

@@ -13,4 +13,6 @@
     <string name="pref_clear_database_summary">Remove all logged notifications</string>
     <string name="pref_export_title">Export to sdcard</string>
     <string name="pref_about_title">About</string>
+    <string name="fab_cd_create_notification">FAB: Create notification</string>
+    <string name="title_create_notification">Create notification</string>
 </resources>