diff --git a/metadata.json b/metadata.json
new file mode 100644
index 0000000..28db296
--- /dev/null
+++ b/metadata.json
@@ -0,0 +1,13 @@
+{
+  "name": "Q2A Social Sharing",
+  "uri": "https://github.com/amiyasahu/q2a-social-share/",
+  "description": "Adds Clickable Social Sharing Buttons Below Questions",
+  "version": "1.6.0",
+  "date": "2015-09-22",
+  "author": "Amiya Sahu",
+  "author_uri": "http://www.amiyasahu.com/",
+  "license": "GPLv3",
+  "update_uri": "https://raw.githubusercontent.com/amiyasahu/q2a-social-share/master/qa-plugin.php",
+  "min_q2a": "1.5",
+  "min_php": "5.1.6"
+}
\ No newline at end of file
diff --git a/qa-plugin.php b/qa-plugin.php
index 21c9bb5..fdcd9d5 100644
--- a/qa-plugin.php
+++ b/qa-plugin.php
@@ -4,8 +4,8 @@
         Plugin Name: Q2A Social Sharing
         Plugin URI: https://github.com/amiyasahu/q2a-social-share/
         Plugin Description: Adds Clickable Social Sharing Buttons Below Questions
-        Plugin Version: 1.5.0
-        Plugin Date: 2015-09-21
+        Plugin Version: 1.6.0
+        Plugin Date: 2015-09-22
         Plugin Author: Amiya Sahu
         Plugin Author URI: http://amiyasahu.com
         Plugin License: GPLv2
diff --git a/qa-social-share-admin.php b/qa-social-share-admin.php
index d495c79..fd3ee43 100644
--- a/qa-social-share-admin.php
+++ b/qa-social-share-admin.php
@@ -1,4 +1,7 @@
 <?php
+    if ( !defined( 'QA_VERSION' ) ) { // don't allow this page to be requested directly from browser
+        exit;
+    }
 
     class qa_social_share_admin
     {
diff --git a/qa-social-share-layer.php b/qa-social-share-layer.php
index 0bcd1d1..165cca1 100644
--- a/qa-social-share-layer.php
+++ b/qa-social-share-layer.php
@@ -1,4 +1,7 @@
 <?php
+    if ( !defined( 'QA_VERSION' ) ) { // don't allow this page to be requested directly from browser
+        exit;
+    }
 
     class qa_html_theme_layer extends qa_html_theme_base
     {
diff --git a/qa-social-share-options.php b/qa-social-share-options.php
index 1dafc22..c6891fe 100644
--- a/qa-social-share-options.php
+++ b/qa-social-share-options.php
@@ -1,4 +1,7 @@
 <?php
+    if ( !defined( 'QA_VERSION' ) ) { // don't allow this page to be requested directly from browser
+        exit;
+    }
 
     class qa_sss_opt
     {
diff --git a/qa-social-share-utils.php b/qa-social-share-utils.php
index e347b59..c238ab2 100644
--- a/qa-social-share-utils.php
+++ b/qa-social-share-utils.php
@@ -1,4 +1,7 @@
 <?php
+    if ( !defined( 'QA_VERSION' ) ) { // don't allow this page to be requested directly from browser
+        exit;
+    }
 
     function ami_social_icon( $icon )
     {
diff --git a/qa-social-share-widget.php b/qa-social-share-widget.php
index 3c75098..c5c1101 100644
--- a/qa-social-share-widget.php
+++ b/qa-social-share-widget.php
@@ -1,4 +1,7 @@
 <?php
+    if ( !defined( 'QA_VERSION' ) ) { // don't allow this page to be requested directly from browser
+        exit;
+    }
 
     class qa_social_share_widget
     {