Specify core project so makefile can run.

Problem/Motivation

When I run drush make ngpprofile.make, it fails with the following error message: "No core project specified."

Proposed resolution

Add the following line to the make file, shortly after line 1:
projects[ngpprofile][type] = core

Remaining tasks

1. Review the attached patch.
2. Remove the TODO line on the main page of this project about needing a makefile. :)

(Ideally, also figure out why drush make continues to say "You need to specify an API version of two in your makefile" even after I've done so. See issue 1237150. The patched makefile runs successfully even with that warning, though.)

User interface changes

None.

API changes

None.