diff --git a/.gitignore b/.gitignore
index 345433c6..352b8f78 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@ local.properties
 .externalNativeBuild/
 build/
 captures/
+release/
 
 .idea/
 .d
diff --git a/README.md b/README.md
index db39092b..cac7431a 100644
--- a/README.md
+++ b/README.md
@@ -20,16 +20,8 @@ A [shadowsocks](http://shadowsocks.org) client for Android, written in Kotlin.
 * Set environment variable `ANDROID_HOME` to `/path/to/android-sdk`
 * (optional) Set environment variable `ANDROID_NDK_HOME` to `/path/to/android-ndk` (default: `$ANDROID_HOME/ndk-bundle`)
 * Set environment variable `GOROOT_BOOTSTRAP` to `/path/to/go`
-* Create your key following the instructions at https://developer.android.com/studio/publish/app-signing.html
-* Create `mobile/local.properties` from `mobile/local.properties.example` with your own key information
-* Invoke the building like this
-
-```bash
-    git submodule update --init --recursive
-
-    # Build the App
-    sbt clean go-build android:package-release
-```
+* Fetch submodules using `$ git submodule update --init --recursive`
+* Build it using Android Studio or gradle script
 
 ### TRANSLATE
 
diff --git a/local.properties.example b/local.properties.example
deleted file mode 100644
index 2484df3b..00000000
--- a/local.properties.example
+++ /dev/null
@@ -1,4 +0,0 @@
-storeFile=/path/to/your/keystore
-storePassword=passwd
-keyPassword=passwd
-keyAlias=alias
diff --git a/mobile/build.gradle b/mobile/build.gradle
index e7a911d8..bf7ea708 100644
--- a/mobile/build.gradle
+++ b/mobile/build.gradle
@@ -57,18 +57,6 @@ android {
     sourceSets.main.jniLibs.srcDirs += new File(project(':core').projectDir, "src/main/jni/overture")
 }
 
-def propsFile = rootProject.file('local.properties')
-if (propsFile.exists()) {
-    def props = new Properties()
-    props.load(new FileInputStream(propsFile))
-    android.signingConfigs.release.storeFile = file(props['storeFile'])
-    android.signingConfigs.release.storePassword = props['storePassword']
-    android.signingConfigs.release.keyAlias = props['keyAlias']
-    android.signingConfigs.release.keyPassword = props['keyPassword']
-} else {
-    android.buildTypes.release.signingConfig = null
-}
-
 dependencies {
     implementation project(':core')
     implementation "com.android.support:customtabs:$supportLibraryVersion"