When updating cordova packages or the cordova platform android, you may run into an issue where it says something like:
Found com.google.android.gms:play-services-location:+, but version 9.0.0 is needed for the google-services plugin
I found the easiest fix for this is just to edit in:
./platform/android/project.properties
Note that this path may change in version 7 of the android platform as they did rearrange their folder structure.
Once you open the file with your editor of choice you can just change offending errors like com.google.android.gms:play-services-location:+ to:
com.google.android.gms:play-services-location:11.0.4
or whatever your version so that all of your gms versions match.
Yayadev 