use url link in locate SDK dialog

Author: codeanticode

src/processing/mode/android/AndroidSDK.java

@@ -41,6 +41,8 @@
 
 
 class AndroidSDK {
+  static final String DOWNLOAD_URL ="https://developer.android.com/studio/index.html#downloads";
+    
   private final File folder;
   private final File tools;
   private final File platforms;
@@ -56,9 +58,8 @@ class AndroidSDK {
     "If it is installed, click “Locate SDK path” to select the <br>" +
     "location of the SDK, or “Download SDK” to let <br>" +
     "Processing download the SDK automatically.<br><br>" +
-    "If you want to download the SDK manually, you can visit <br>"+
-    "http://developer.android.com/sdk/installing/index.html <br>" +
-    "and select the stand-alone SDK tools. Make sure to install <br>"+
+    "If you want to download the SDK manually, you can get <br>"+
+    "the command line tools from <a href=\"" + DOWNLOAD_URL + "\">here</a>. Make sure to install<br>" +
     "the SDK platform for API 15 (Android 4.0.3) or higher.";
 
   private static final String SELECT_ANDROID_SDK_FOLDER =