Let Android install debug & release APKs side-by-side (#31)

.gitignore

@@ -48,3 +48,4 @@ lib/generated_plugin_registrant.dart
 /ios/Flutter/.last_build_id
 /local.properties
 /.gradle/
+*.keystore

android/app/build.gradle

@@ -70,6 +70,12 @@ android {
             minifyEnabled false
             useProguard false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+
+            resValue 'string', 'app_name', '"Nebula"'
+        }
+        debug {
+            resValue 'string', 'app_name', '"Nebula-DEBUG"'
+            applicationIdSuffix '.debug'
         }
     }
 }

android/app/src/debug/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#f2c10d</color>
+</resources>

android/app/src/main/AndroidManifest.xml

@@ -10,7 +10,7 @@
     <uses-feature android:name="android.hardware.camera" android:required="false" />
     <application
         android:name="io.flutter.app.FlutterApplication"
-        android:label="Nebula"
+        android:label="@string/app_name"
         android:icon="@mipmap/ic_launcher">
         <service android:name=".NebulaVpnService"
             android:permission="android.permission.BIND_VPN_SERVICE"