This commit changes the internal `search()` function into an exposed
`Search()` function that can be used to execute queries against an
instance of an ElasticSearch client. The per-query-type methods of
`Run()` are removed for now to prevent having to create them for every
type. `Search()` is agnostic.
A README.md file is added with some information, and a few lingering
lint errors are fixed.
Ido Perlmuter