gradle android signing and other useful configs

useful.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 19
    buildToolsVersion "21.1.2"

    defaultConfig {
        applicationId "com.example.package.app"
        minSdkVersion 16
        targetSdkVersion 19
    }

    packagingOptions {
        exclude 'troublesome files'
    }

    signingConfigs {
        releaseCfg {
            storeFile file("store.keystore")
            storePassword System.getenv("PASSWORD") //i.e. export/set PASSWORD=MyPassword
            keyAlias "Project Alias"
            keyPassword System.getenv("PASSWORD")
        }
    }

    buildTypes {
        release {
            signingConfig signingConfigs.releaseCfg
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'

            buildConfigField "String", "SETTING", "A config""
        }

        debug {
            buildConfigField "String", "SETTING", "A settings debug value"
        }
    }
}

apply plugin: 'android-unit-test'

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile project(':sup-project')
    testCompile 'junit:junit:4.+'
    testCompile 'org.robolectric:robolectric:2.4'
    testCompile 'org.mockito:mockito-core:1.+'
}