Update README and how release builds are created.

.gitignore

@@ -56,3 +56,4 @@ freeline.py
 freeline/
 freeline_project_description.json
 
+secrets.properties

README.md

@@ -27,3 +27,20 @@ If you're installing the APK directly, you'll need to allow `Install from untrus
 
 You can file issues in the [issues tab](https://github.com/MyHush/SilentDragonAndroid/issues).
 
+## Release Build Process
+
+In order to build you'll need to obtain the following files and place them in the main directory.
+* silent_dragon_keystore.jks
+* secrets.properties
+
+These files contain sensitive information and should not be committed to git.
+
+Before creating each build you should increment the version code & version name in the build.gradle file. These must be incremented for each release otherwise the Play Store will reject the build.
+
+To create a release build navigate to the project directory in terminal and run
+./gradlew clean assembleRelease
+
+This will produce an apk file in the following directory.
+SilentDragonAndroid/app/build/output/apk/release/app-release.apk
+
+This build can be directly uploaded to Google Play.

app/build.gradle

@@ -2,8 +2,16 @@ apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 
+def secretsPropertiesFile = rootProject.file("secrets.properties")
+def secretProperties = new Properties()
+
+if (secretsPropertiesFile.exists()) {
+    secretProperties.load(new FileInputStream((secretsPropertiesFile)))
+}
+
 android {
     compileSdkVersion 28
+
     defaultConfig {
         applicationId "org.myhush.silentdragon"
         minSdkVersion 19
@@ -13,8 +21,19 @@ android {
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
     }
+
+    signingConfigs {
+        release {
+            storeFile file(secretProperties["store_file_location"])
+            keyAlias secretProperties["key_alias"]
+            keyPassword secretProperties["key_password"]
+            storePassword secretProperties["store_password"]
+        }
+    }
+
     buildTypes {
         release {
+            signingConfig signingConfigs.release
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }

build.gradle

@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.10'
+    ext.kotlin_version = '1.3.50'
     repositories {
         google()
         jcenter()