Merge branch '13-fix-generated-apk-file-name' into 'master'

Resolve "Fix generated apk file name"

Closes #13

See merge request !10

android/app/build.gradle

@@ -43,7 +43,7 @@ android {
         targetSdkVersion 29
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
-        archivesBaseName = "$applicationId-v$versionName+$versionCode"
+        archivesBaseName = "$applicationId" + "_" + "$versionCode"
     }
 
     signingConfigs {