I want to import a project named StackBlur from GitHub as my library. But error happened when I modify .gradle files.
app/build.gradle:
apply plugin: 'com.android.application'
android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"
    defaultConfig {
        applicationId "com.badprinter.yobey"
        minSdkVersion 11
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:22.2.1'
    compile project (':libs:StackBlur')
}
settings.gradle:
include ':app'
include ":libs:StackBlur"
And my project structure looks like:
-YoBey
-app
 -build.gradle
-libs
 -StackBlur
   -src
   -build.gradle
-settings.gradle
-build.gradle
 
     
    