Solved compilation warning.

app/build.gradle

@@ -61,7 +61,8 @@ android {
     }
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
+            shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android.txt'),
                     'proguard-rules.pro'
         }

app/proguard-rules.pro

@@ -60,4 +60,8 @@
 
 
 # self signed glidemodule
--keep public class * implements com.bumptech.glide.module.GlideModule
+-keep public class * implements com.bumptech.glide.module.GlideModule
+
+-dontwarn com.anupcowkur.reservoir.**
+
+-dontwarn javax.annotation.**

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-beta4'
+        classpath 'com.android.tools.build:gradle:3.0.0-beta5'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong