Minor changes of README

LICENSE → LICENSE.txt

@@ -1,7 +1,6 @@
-
                                  Apache License
                            Version 2.0, January 2004
-                        http://www.apache.org/licenses/
+                        https://www.apache.org/licenses/
 
    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
 
@@ -193,7 +192,7 @@
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
 
-       http://www.apache.org/licenses/LICENSE-2.0
+       https://www.apache.org/licenses/LICENSE-2.0
 
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,

README.md

@@ -1,17 +1,20 @@
 # HayaiLauncher
-A fast, lightweight Android Launcher.
 
-Currently the app requires no permissions and the APK's size is lower than 100KB.
+It is a fast, lightweight Android Launcher.
+It is [free/libre software](https://www.fsf.org/blogs/rms/20140407-geneva-tedx-talk-free-software-free-society).
 
-Download links:
+Currently the app requires no permissions.
+Moreover, the APK's size is lower than 100KB.
 
-Play Store: https://play.google.com/store/apps/details?id=com.hayaisoftware.launcher
+## Download
 
-github: https://github.com/seizonsenryaku/HayaiLauncher/releases
+- [Google Play Store](https://play.google.com/store/apps/details?id=com.hayaisoftware.launcher)
+- [F-Droid](https://f-droid.org/repository/browse/?fdid=com.hayaisoftware.launcher)
+- [GitHub](https://github.com/seizonsenryaku/HayaiLauncher/releases)
 
 
-Screenshots:
+## Screenshots
 
-<img width="30%" src="https://github.com/seizonsenryaku/HayaiLauncher/raw/master/screenshots/ss1.png">
-<img width="30%" src="https://github.com/seizonsenryaku/HayaiLauncher/raw/master/screenshots/ss2.png">
-<img width="30%" src="https://github.com/seizonsenryaku/HayaiLauncher/raw/master/screenshots/ss3.png">
+<img width="30%" src="https://github.com/seizonsenryaku/HayaiLauncher/raw/master/screenshots/ss1.png" alt="" />
+<img width="30%" src="https://github.com/seizonsenryaku/HayaiLauncher/raw/master/screenshots/ss2.png" alt="" />
+<img width="30%" src="https://github.com/seizonsenryaku/HayaiLauncher/raw/master/screenshots/ss3.png" alt="" />