test (Suite): add search index test
test (Suite): add search index test

(suite): populate index
removed (spec 2) as its not needed
(suite): search index
add (spec 1): should return an array of indices of the correct objects
that contain the words in the search query

andela-abankole/inverted-index,andela-abankole/inverted-index,andela-abankole/inverted-index