adding search to contacts resource
Add a paging mechanism for contact searching
Fix typos, add more comments
use redis hashes instead of sets
Add tests for contact search paging
Update documentation for 'contact.search'
Rename variable search_id to request_id (more accurate)
Merge branch 'develop' of github.com:praekelt/vumi-go into feature/issue-809-contacts-resource-search
Remove hardcoded config fields in ContactResource
Add test for ContactResource.make_batches
Merge branch 'develop' of github.com:praekelt/vumi-go into feature/issue-809-contacts-resource-search
Excise paging feature and have search return keys instead of objects
Merge branch 'develop' of github.com:praekelt/vumi-go into feature/issue-809-contacts-resource-search
Remove obsolete leftovers from the paging impl
Some error handling cleanups in search() and by_key()
for search(), results are now stored in 'keys' field
Add 'max_keys' param for contact search
Improved parsing of `max_keys' field for contact search
Merge pull request #809 from praekelt/feature/issue-809-contacts-resource-search

Implemented contact search API for the JS Sandbox