Use CGI.escape instead of URI.escape to escape query string params
Update specs to reflect change from URI.escape to CGI.escape

Improve strength of expectation matching by comparing to actual strings
Change matching approach because 1.8 hashes are unordered

...and thus a pain to test in a non-brittle way
Bump version and update changelog
move some methods from Keen::Client to Keen:Helpers
move config variable to a config class
add a query class
add ability to save a query in Keen
add methods delete and saved to get a query
update Readme
keep possiblity to run queries specific to a keen client instance
keep compability with previous way to configure the gem