add sms list and tests
adding get call
updating common response, other small things
updating common response, other small things
Merge pull request #14 from natebrennand/voice

adding get call
properly add query to sms list query
Merge remote-tracking branch 'origin/master' into sms_list
fix dat build
Merge pull request #13 from natebrennand/sms_list

add message list method and tests
Merge branch 'master' into add_media

Conflicts:
	sms/constants.go
refactor into SMS