Added Ignore case to regex
Improved Tweet Message ID tests

Added additional test cases to check that the following examples work as
expected:

* Message Header too long = fail
* Message Header too short = fail
* Incorrect message type = fail

Added extra check for message type to Tweet. Also added a check for body
starting with @ for checking that the sender is the first word in the message
body.
Updated git attributes
Changed text to auto line endings
Updated Email testing
Updates to project
Merge branch 'develop' into tweet-tests
Updated Tweet and its unit tests
Merge branch 'tweet-tests' into develop
Updated Email and Tests
Merge branch 'email-tests' into develop
Updated SMS and its unit tests
Renamed SMS unit tests
Merge branch 'sms-tests' into develop
Reverted debugging code
Updated project file
Added renamed sms unittests