Fixes headers encoding.
Fix tests for every supported senders.
Improves Mock sender.
Error message for mock sender.
Exposes $to and $attachments correctly.
Add name in address if available for PHPMailer.
Merge remote-tracking branch 'origin/3.3/feature/header-encoding' into 3.3/master

Conflicts:
	classes/Kohana/Mail/Sender/PHPMailer.php
Duplicate method signatures.
Encode selective headers.
Initial headers in configuration to set things like Return-Path.
Set the RECEIVER to NULL in order not to be spammed.
Enforces Kohana conventions using CodeSniffer.
Update README.md

The $to variable in the sender is the same as the one providen.
Use Kohana::$charset for mb_encode_mimeheader.
Merge branch '3.3/master' of https://github.com/Hete/kohana-mail into 3.3/master
Redundancy in README.
Forgot a space in headers.
Merge branch '3.3/master' of https://github.com/Hete/kohana-mail into 3.3/master
Missing a newline after each multipart part.
Wordwrap for attachments and body.
Cut base64 encoded attachment at 78 characters.
Wrap anything else past 78 characters on word.
Removed empty setUp in tests.
Adds PHPUnit in development dependencies.
Fixed configuration for PHPMailer, options are not automatically
capitalized.