Improve travis script error checker

Created by: optimumtact

Builds should not pass when they have an error count that is a multiple of 10

dreammaker outputs the literal string

{some other stuff }  - 0 errors and 0 warnings

on a successful build, so by including that in the grep as the literal character -, I eliminate the possibility of matching against

{some other stuff } - 10 errors and 0 warnings

Which is of course obviously not what we wanted