gen: Fix unit test failure
gen: Fix unit test failure

The unit test execution fails with this error:
  1) generator-angular-modsmith:app "before all" hook:
     TypeError: .../generators/app/templates/_package.json:8
  ....
  ....
  Cannot read property 'length' of undefined

Signed-off-by: Sanjeev Premi <e2c59cdd009c02452534cc3986d2bb876e0e4eac@ymail.com>

spremi/generator-angular-modsmith,spremi/generator-angular-modsmith