fix(gulp): fix broken test:server:watch task (#1842)
fix(gulp): fix broken test:server:watch task (#1842)

Pass the path string of the changed file to `gulp-refresh` plugin, so that an exception won't be thrown when test files are reloaded.
lirantal/meanjs,tmullen71/automata,tmullen71/automata,tmullen71/automata,lirantal/meanjs,meanjs/mean,meanjs/mean,lirantal/meanjs,meanjs/mean