Refactor Query.rb, fix yaml output
expose a method to return all results
get tests to pass with new structure
increase coverage for Query
fix bug with filter expressions
add tests and fixes for zero-results corner case
add a couple of useful helper getters for Query
remove unstable methods from public api
documentation for vcloud-query
Merge pull request #50 from alphagov/query_spike

Improvements to Vcloud::Query