SMS-Send documentation

• SMS-Send - README
• SMS-Send - Changes
• SMS-Send - META.yml
• SMS-Send Makefile.PL
• SMS::Send - Driver-based API for sending SMS messages  [view source]
• SMS::Send::AU::Test - SMS::Send Regional-Class Testing Driver  [view source]
• SMS::Send::Driver - Base class for SMS::Send drivers  [view source]
• SMS::Send::Test - SMS::Send International-Class Testing Driver  [view source]