Adding Dial verb and its nouns
Prefixing verb and noun file names for better organization.
Fixing missing Sms method on Response struct
Adding addGather method and renaming Gather field
Adding test for Dial and its nouns
Removing logging from twiml tests

Fixes #16
More sane construction of structs
Adding expected output to example
Merge pull request #17 from natebrennand/twiml

Twiml