Problemas con el Build.

Message Error

Error:The number of method references in a .dex file cannot exceed 64K.
Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html
:app:transformClassesWithDexForDebug FAILED
Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
> com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.7.0_65\bin\java.exe'' finished with non-zero exit value 2

Module:app

apply plugin: 'com.android.application'
apply plugin: 'android-apt'
android {
    compileSdkVersion 23
    buildToolsVersion '23.0.2'

    defaultConfig {
        applicationId "ec.edu.ug"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    apt 'com.jakewharton:butterknife-compiler:8.1.0'
    compile 'com.android.support:appcompat-v7:23.4.0'
    compile 'de.hdodenhof:circleimageview:2.0.0'
    compile 'com.android.support:cardview-v7:23.4.0'
    compile 'com.android.support:design:23.4.0'
    compile 'com.wang.avi:library:1.0.5'
    compile 'com.jakewharton:butterknife:8.1.0'
    compile 'com.google.code.gson:gson:2.4'
    compile 'com.mcxiaoke.volley:library:1.0.19'
    compile 'cn.pedant.sweetalert:library:1.3'
    compile 'com.google.android.gms:play-services-location:9.2.1'
    compile 'com.google.android.gms:play-services-maps:9.2.1'
    compile 'com.google.android.gms:play-services:9.2.1'
}

Proyect:"nameProyect"

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.1.2'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        mavenCentral()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}