small SDK proxy ifdef fix, rewording of sentence in readme

docs/android_zt_sdk.md

@@ -42,7 +42,7 @@ new Thread(new Runnable() {
 
 **Step 4: App permissions**
 
- - In order for your application to write the auth keys to the internal storage you'll need to set a few permissions in your `AndroidManifest.xml` file:
+ - In order for your application to write the auth keys and network files to the internal storage you'll need to set a few permissions in your `AndroidManifest.xml` file at the same scope level as `<application>`:
 
 ```
 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

integrations/android/example_app/app/src/main/AndroidManifest.xml

@@ -4,7 +4,7 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-    
+
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 

integrations/android/example_app/app/src/main/java/com/example/joseph/example_app/MainActivity.java

@@ -5,6 +5,9 @@ import android.os.Bundle;
 
 import ZeroTier.SDK;
 
+import java.net.InetSocketAddress;
+import java.net.*;
+
 public class MainActivity extends AppCompatActivity {
 
     @Override
@@ -18,5 +21,10 @@ public class MainActivity extends AppCompatActivity {
                 wrapper.startOneService(); // Calls to JNI code
             }
         }).start();
+
+        Socket s = new Socket();
+        SocketAddress proxyAddr = new InetSocketAddress("0.0.0.0", 1337);
+        Proxy proxy = new Proxy(Proxy.Type.SOCKS, proxyAddr);
+
     }
 }

src/SDK_EthernetTap.cpp

@@ -136,7 +136,7 @@ NetconEthernetTap::NetconEthernetTap(
     
 	// Start SOCKS5 Proxy server
 	// For use when traditional syscall hooking isn't available (ex. some APIs on iOS and Android)
-	#if defined(USE_SOCKS_PROXY)
+	#if defined(USE_SOCKS_PROXY) || defined(__ANDROID__)
 		StartProxy(sockPath);
 	#endif