Mobile app initial implementation.

Closes #3 (closed)

android/app/build.gradle

@@ -24,6 +24,12 @@ if (flutterVersionName == null) {
 apply plugin: 'com.android.application'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
+def keystoreProperties = new Properties()
+def keystorePropertiesFile = rootProject.file('key.properties')
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
+
 android {
     compileSdkVersion 28
 
@@ -41,6 +47,15 @@ android {
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 
+    signingConfigs {
+        release {
+            keyAlias keystoreProperties['keyAlias']
+            keyPassword keystoreProperties['keyPassword']
+            storeFile file(keystoreProperties['storeFile'])
+            storePassword keystoreProperties['storePassword']
+        }
+    }
+
     buildTypes {
         release {
             // TODO: Add your own signing config for the release build.
@@ -54,7 +69,7 @@ android {
     productFlavors {
         development {
             dimension "flavor-type"
-            applicationIdSuffix ".dev"
+            applicationIdSuffix ".development"
             versionNameSuffix "-dev"
             manifestPlaceholders = [appLabel:"Vereign-dev"]
         }