Just a simple step by step reference for packaging a cordova app:

1. CD to the directory containing your app in the console
2. export PATH=$PATH:”/cygdrive/P/Programs/Android/SDK/tools”
   export PATH=$PATH:”/cygdrive/P/Programs/Java/jdk1.8.0_121/bin”
   export PATH=$PATH:”/cygdrive/P/Programs/Android/SDK/build-tools/25.0.1″
   export ANDROID_HOME=/cygdrive/P/Programs/Android/SDK/
   export PATH=${PATH}:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools
   This is specific to my system, you may not need to do something like this
3. cordova build –release android
   This will create platforms\android\build\outputs\apk\android-release-unsigned.apk
4. CD and copy your keystore to platforms\android\build\outputs\apk
5. jarsigner -verbose -sigalg SHA1withDSA -digestalg SHA1 -keystore your.keystore android-release-unsigned.apk keystorename
   sign it with your keystore, you may need to use a different signing method
6. zipalign -v 4 android-release-unsigned.apk android-release-signed.apk

All done!