[#add] add alerter option with tests

add option to pass in alerter options object. add tests for alerter option, and move sinon setup to separate file

Branch: add-alerter-options
[#add] fix JSONP tests

Branch: add-alerter-options
[#add] update readme and bump version

Branch: add-alerter-options
[#add] update for code clarity

Branch: add-alerter-options
Merge pull request #6 from blocks/add-alerter-options

Add option to pass in Alerter config