Added minSdkVersion as readme badge

README.md

@@ -3,5 +3,6 @@ Android app for http://knigopis.com
 
 [![Build Status](https://travis-ci.org/sirekanyan/knigopis.svg?branch=master)](https://travis-ci.org/sirekanyan/knigopis)
 [![APK Size](https://img.shields.io/badge/apk%20size-2.16%20MB-brightgreen.svg)](https://travis-ci.org/sirekanyan/knigopis)
+[![APK Size](https://img.shields.io/badge/API-21%2B-brightgreen.svg)](https://source.android.com/setup/start/build-numbers)
 
 <a href='https://play.google.com/store/apps/details?id=com.sirekanyan.knigopis'><img alt='Get it on Google Play' src='https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png'/></a>

app/build.gradle.kts

@@ -73,7 +73,8 @@ task("updateReadme") {
         val apkFile = releaseFiles.single { it.exists() && it.extension == "apk" }
         val properties = mapOf(
             "apkSize" to "%.2f".format(apkFile.length().toFloat() / 1024 / 1024),
-            "appVersion" to android.defaultConfig.versionName.orEmpty()
+            "appVersion" to android.defaultConfig.versionName.orEmpty(),
+            "minSdkVersion" to android.defaultConfig.minSdkVersion?.apiLevel?.toString().orEmpty()
         )
         rootProject.file("README.md").printWriter().use { readme ->
             rootProject.file("readme.md").forEachLine { inputLine ->

readme.md

@@ -3,5 +3,6 @@ Android app for http://knigopis.com
 
 [![Build Status](https://travis-ci.org/sirekanyan/knigopis.svg?branch=master)](https://travis-ci.org/sirekanyan/knigopis)
 [![APK Size](https://img.shields.io/badge/apk%20size-{{apkSize}}%20MB-brightgreen.svg)](https://travis-ci.org/sirekanyan/knigopis)
+[![APK Size](https://img.shields.io/badge/API-{{minSdkVersion}}%2B-brightgreen.svg)](https://source.android.com/setup/start/build-numbers)
 
 <a href='https://play.google.com/store/apps/details?id=com.sirekanyan.knigopis'><img alt='Get it on Google Play' src='https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png'/></a>