How to build a release APK
ionic build --release android
jarsigner -verbose -keystore <path-of-toutcast.keystore> <path-of-android-release-unsigned.apk> toutcast
~/Library/Android/sdk/build-tools/23.0.2/zipalign -f -v 4 <android-release-unsigned.apk > <ToutCast-#-#-#.apk>