Add method Resource#search_in_readme for full text searching
Add method Resource#search_in_readme for full text searching

Running a query like `Resource.search_in_readme('ajax')` will search the
readme field of all resource records for matching text.

codeunion/api.codeunion.io,codeunion/api.codeunion.io,chrisswk/api.codeunion.io,chrisswk/api.codeunion.io