Update readme

README.md

@@ -2,11 +2,24 @@
 
 Yet another F-Droid client.
 
+[![Release](https://img.shields.io/github/v/release/kitsunyan/foxy-droid)](https://github.com/kitsunyan/foxy-droid/releases)
+[![F-Droid](https://img.shields.io/f-droid/v/nya.kitsunyan.foxydroid)](https://f-droid.org/packages/nya.kitsunyan.foxydroid/)
+
 ## Description
 
-Unofficial F-Droid client that resembles classic F-Droid client.
+Unofficial F-Droid client that resembles the classic F-Droid client.
 
-## Screenshots
+The client supports all basic F-Droid features, such as repository management and package installation. It doesn't
+support privileged extension, root installation, or local repositories.
+
+### Features
+
+* Classic F-Droid style, without cards or inappropriate animations
+* Fast repositories synchronization under good network conditions
+* Built upon standard Android components and a minimal set of dependencies
+* Made with attention to details, both in program logic and design
+
+### Screenshots
 
 <p>
 <img src="metadata/en-US/images/phoneScreenshots/1.png" width="16%" />
@@ -17,6 +30,22 @@ Unofficial F-Droid client that resembles classic F-Droid client.
 <img src="metadata/en-US/images/phoneScreenshots/6.png" width="16%" />
 </p>
 
+## Building and Installing
+
+Android SDK path should be specified either using `ANDROID_HOME` environment variable or using `sdk.dir` property in
+`local.properties`.
+
+Signing can be done automatically using `keystore.properties` as follows:
+
+```properties
+store.file=/path/to/keystore
+store.password=key-store-password
+key.alias=key-alias
+key.password=key-password
+```
+
+Run `./gradlew assembleRelease` to build the package. The package can be installed using Android package manager.
+
 ## License
 
-Licensed under the terms of GNU GPL version 3 or later.
+Foxy Droid is available under the terms of GNU General Public License v3 or later. Copyright (C) 2020 kitsunyan.