Runs on Android 4.4+.
+=====
+Usage
+=====
+After installation, you have to start the application `at least once`__.
+Then it will be running as a background service that shows the headset
+status icon whenever the headphones are plugged in.
+
+You can close the app, and the status icon will still work - even after
+rebooting your phone.
+
+__ http://stackoverflow.com/a/8535062/282601
+
+
+===================
+Why was it written?
+===================
+I wrote the headphone indicator app because I was immensely unsatisfied
+with apps like `susomena's Headphones Indicator`__ which are over
+2 MiB in size, but 99% of their code is only related to advertisement.
+
+My task was to show that you can make it much, much better.
+
+__ https://play.google.com/store/apps/details?id=com.susomena.headphonesindicator
+
+
========
Building
========
$ ./gradlew build
+Note that AndroidStudio 1.5.1 does not detect the gradle configuration correctly
+and produces ``.apk`` files much larger than necessary, with duplicated files.
+
+``gradlew`` on command line does it correctly, though.
+
+
+Releasing
+=========
+Build it normally, then sign the generated package file::
+
+ $ ./gradlew assembleRelease
+
+To sign the release with your key, put the path to the signing configuration
+file into ``gradle.properties``::
+
+ signingconfigfile=/path/to/signing-config.gradle
+
+The signing configuration file should look like shown in
+`Handling signing configs with Gradle`__
+
+__ https://www.timroes.de/2013/09/22/handling-signing-configs-with-gradle/
+
=========================
About headphone indicator