Added link to fdroid in readme file

README.md

@@ -5,4 +5,9 @@ Android app for [knigopis.com](https://www.knigopis.com)
 [![APK Size](https://img.shields.io/badge/apk%20size-2.18%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>
+<a href='https://f-droid.org/en/packages/com.sirekanyan.knigopis/'>
+  <img height="100" alt='Get it on F-Droid' src='https://fdroid.gitlab.io/artwork/badge/get-it-on.png'/>
+</a>
+<a href='https://play.google.com/store/apps/details?id=com.sirekanyan.knigopis'>
+  <img height="100" 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

@@ -85,6 +85,7 @@ task("updateReadme") {
         val properties = mapOf(
             "apkSize" to "%.2f".format(apkFile.length().toFloat() / 1024 / 1024),
             "appVersion" to android.defaultConfig.versionName.orEmpty(),
+            "appPackage" to android.defaultConfig.applicationId.orEmpty(),
             "minSdkVersion" to android.defaultConfig.minSdkVersion?.apiLevel?.toString().orEmpty()
         )
         rootProject.file("README.md").printWriter().use { readme ->

readme.md

@@ -5,4 +5,9 @@ Android app for [knigopis.com](https://www.knigopis.com)
 [![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>
+<a href='https://f-droid.org/en/packages/{{appPackage}}/'>
+  <img height="100" alt='Get it on F-Droid' src='https://fdroid.gitlab.io/artwork/badge/get-it-on.png'/>
+</a>
+<a href='https://play.google.com/store/apps/details?id={{appPackage}}'>
+  <img height="100" alt='Get it on Google Play' src='https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png'/>
+</a>