Add a handler for 'contacts.search'. only handles exact matching though
add test for _handle_contacts_search
fix bug in test case
fix another bug
fix all the bugs
allow for contact searches using structured fields
use AND for matching on multiple query terms
fix comment typo
update DummyApi for latest contacts search impl
some minor cleanups in the tests for get_by_key and search
remove unnecessary whitespace
Merge pull request #45 from praekelt/feature/issue-44-contacts-search-dummyapi

Added dummy handlers for 'contact.search' and 'contact.get_by_key'