added rake to the development dependancy to make running the test simpler.
added rake to the development dependancy to make running the test simpler.

johnpmitsch/scoped_search,wvanbergen/scoped_search,jlsherrill/scoped_search,wvanbergen/scoped_search,jlsherrill/scoped_search,johnpmitsch/scoped_search,lzap/scoped_search,lzap/scoped_search