Merge pull request #5 from Baby-com-br/master

Some improvements
Refactoring specs for CloudSearch::Searcher
API version is part of the search URL
CloudSearch::Indexer refactoring
Renames Searcher#build_url to Searcher#url
Adds Indexer usage on README
Fix indexer example on README
Bump up version
Add pagination.
Bugfix on uri builder.
Release 0.0.3
Adds binary query mode
Fix README typo
Fixes README title levels
Adds information about binary queries to the README
Adds simples gem description to README
Organizing README
Renames 'binary_query' to 'boolean_query'
Release 0.0.4
Removes unused context on searcher_spec.rb