fix the missing pid argument

AndroidManifest.xml

@@ -2,8 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="com.github.shadowsocks"
           android:installLocation="auto"
-          android:versionCode="18"
-          android:versionName="1.3.6">
+          android:versionCode="19"
+          android:versionName="1.3.7">
 
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

pom.xml

@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.github.shadowsocks</groupId>
     <artifactId>shadowsocks</artifactId>
-    <version>1.3.6</version>
+    <version>1.3.7</version>
     <packaging>apk</packaging>
     <name>Shadowsocks</name>
 

src/com/github/shadowsocks/ShadowsocksService.java

@@ -208,7 +208,8 @@ public class ShadowsocksService extends Service {
             @Override
             public void run() {
                 final String cmd = String.format(BASE +
-                        "shadowsocks -s \"%s\" -p \"%d\" -l \"%d\" -k \"%s\" -m \"%s\"",
+                        "shadowsocks -s \"%s\" -p \"%d\" -l \"%d\" -k \"%s\" -m \"%s\" -f " 
+                        + BASE + "shadowsocks.pid",
                         appHost, remotePort, localPort, sitekey, encMethod);
                 System.exec(cmd);
             }