Merge pull request #9 from lgleasain/master

Add support to get return fields from Amazon and to allow for boolean queries.
Update version for return fields support
Correcting error in doc and bug in asari_should_index
Merge pull request #12 from mmeys/bugfixing

Correcting error in doc and bug in asari_should_index
Boolean search queries
Error condition when blank params are passed
Bump version
Refactor into single search method
Spec for both full text search and boolean queries
Fix change I didn't mean to make! :sweat:
Bump version to 0.9.2
Merge pull request #14 from kaiuhl/boolean_queries

Boolean queries
Add kaiuhl to the contributors
Fix case where fully empty subqueries create bad requests
Fix case where fully empty subqueries create bad requests

Signed-off-by: Tommy Morgan <tommy@wellbredgrapefruit.com>
Bump version
Geography conversion helper methods
Add kaiuhl to the contributors
Bump version
Calculate box from point and a distance in meters