rename final apk accoring to build time

build.gradle

String VERSION_NAME = "v0.0.1"
int VERSION_CODE = 1
String APK_NAME = "Hello"
android {
    compileSdkVersion 18
    buildToolsVersion "18.0.1"

    defaultConfig {
        minSdkVersion 10
        targetSdkVersion 18
        versionCode VERSION_CODE
        versionName VERSION_NAME
    }
    signingConfigs {
        myConfig {
            storeFile file('android')
            storePassword "android"
            keyAlias "android"
            keyPassword "android"

        }
    }
    buildTypes {
        release {
            buildDate = new SimpleDateFormat("yyyyMMddHHmm").format(new Date())
            project.archivesBaseName = APK_NAME+"-"+VERSION_NAME + "-"+buildDate;
            zipAlign true
            signingConfig signingConfigs.myConfig
            runProguard true
            proguardFile file('proguard.txt')
        }
        debug {
        }
    }