diff --git a/README.md b/README.md
index 89074e2..dfc61b1 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,27 @@
 AndroidTreeView
 ====================
 
+This is a fork of the original AndroidTreeView Project. 
+
+I have added collapseNodeWithSubnodes method in the main class to have the functionality to collapse a node including it's subnodes in a single method call.
+
+You can use the gradle dependency, you have to add these lines in your build.gradle file:
+
+```xml
+repositories {
+    maven { url "https://jitpack.io" }
+}
+
+dependencies {
+	  compile 'com.github.vajro:AndroidTreeView:1.3.1'
+}
+```
+Kindly ensure you add Jitpack's maven repo url in your gradle file.
+
+#ORIGINAL README
+
+AndroidTreeView
+====================
 ### Recent changes
 
 
diff --git a/app/build.gradle b/app/build.gradle
index 6d144bb..705080c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -1,13 +1,13 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
+    compileSdkVersion 23
+    buildToolsVersion "23.0.2"
 
     defaultConfig {
         applicationId "com.unnamed.b.atv.demo"
         minSdkVersion Integer.parseInt(project.ANDROID_BUILD_MIN_SDK_VERSION)
-        targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
+        targetSdkVersion 21
         versionName project.VERSION_NAME
         versionCode Integer.parseInt(project.VERSION_CODE)
     }
@@ -20,7 +20,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:21.0.3'
+    compile 'com.android.support:appcompat-v7:23.1.1'
     compile 'com.github.johnkil.print:print:1.2.2'
     compile project(':library')
 }
diff --git a/gradle.properties b/gradle.properties
index ddb8205..4bee48b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -22,7 +22,7 @@ VERSION_CODE=11
 
 
 ANDROID_BUILD_MIN_SDK_VERSION=11
-ANDROID_BUILD_TARGET_SDK_VERSION=21
+ANDROID_BUILD_TARGET_SDK_VERSION=22
 ANDROID_BUILD_SDK_VERSION=21
 ANDROID_BUILD_TOOLS_VERSION=21.1.2
 
diff --git a/library/build.gradle b/library/build.gradle
index 92ecb9f..7bb1b50 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -1,12 +1,12 @@
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
+    compileSdkVersion 23
+    buildToolsVersion "23.0.2"
 
     defaultConfig {
         minSdkVersion Integer.parseInt(project.ANDROID_BUILD_MIN_SDK_VERSION)
-        targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
+        targetSdkVersion 23
         versionName project.VERSION_NAME
         versionCode Integer.parseInt(project.VERSION_CODE)
     }
@@ -19,7 +19,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:appcompat-v7:21.0.3'
+    compile 'com.android.support:appcompat-v7:23.1.1'
 }
 
 apply from: '../maven_push.gradle'
diff --git a/library/src/main/java/com/unnamed/b/atv/view/AndroidTreeView.java b/library/src/main/java/com/unnamed/b/atv/view/AndroidTreeView.java
index 222a43a..53f8803 100644
--- a/library/src/main/java/com/unnamed/b/atv/view/AndroidTreeView.java
+++ b/library/src/main/java/com/unnamed/b/atv/view/AndroidTreeView.java
@@ -166,6 +166,10 @@ public void collapseNode(TreeNode node) {
         collapseNode(node, false);
     }
 
+    public void collapseNodeWithSubnodes(TreeNode node) {
+        collapseNode(node, true);
+    }
+
     public String getSaveState() {
         final StringBuilder builder = new StringBuilder();
         getSaveState(mRoot, builder);