Fix location permissions (https://developer.android.com/guide/topics/location/strategies.html#Permission)

app/src/main/AndroidManifest.xml

@@ -1,8 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest package="us.keithirwin.tracman"
-		xmlns:android="http://schemas.android.com/apk/res/android"
-		android:versionCode="@string/version_code"
-		android:versionName="@string/version">
+		xmlns:android="http://schemas.android.com/apk/res/android">
 
 	<uses-permission android:name="android.permission.INTERNET"/>
 	<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
@@ -10,6 +8,8 @@
 	<uses-permission android:name="android.permission.BATTERY_STATS"/>
 	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
 
+	<uses-feature android:name="android.hardware.location.gps" />
+
 	<application
 		android:allowBackup="true"
 		android:icon="@drawable/logo_by"

build.gradle

@@ -5,7 +5,7 @@ buildscript {
 		jcenter()
 	}
 	dependencies {
-		classpath 'com.android.tools.build:gradle:2.1.2'
+		classpath 'com.android.tools.build:gradle:2.2.0'
 		classpath 'com.google.gms:google-services:1.5.0-beta2'
 
 		// NOTE: Do not place your application dependencies here; they belong