Updating README and CONTRIBUTING
Updating travis to remove rubinius 19
Upgrade rspec 2.8.0
Updating gemfile
Adding build status to the readme
Formatting
Fix warning "useless use of == in void context"
add specs for UTF-16 and UTF-32.
add suffix "BE" to UTF-16 and UTF-32.

Ruby1.9.2 doesn't know UTF-16 and UTF-32 but knows UTF-16BE and UTF-32BE.
Ruby1.9.3 knows UTF-16 and UTF-32 but they are dummy encoding.
see http://www.ietf.org/rfc/rfc2781.txt
Fix warning: ambiguous first argument; put parentheses or even spaces
Merge pull request #327 from kennyj/ambiguous_first_argument_put_parentheses_or_even_spaces

Fix warning: ambiguous first argument; put parentheses or even spaces
Handle multipart mail in #to_yaml / #from_yaml
Version bump to 2.4.0 and gem release
Change some spec for this fix
Remove unnecessary instance valiables.
Fixing folding problem (rails issue 3824)
Some Refactor
Merge branch 'rails_issue_3824-2' of https://github.com/kennyj/mail into kennyj-rails_issue_3824-2
Merge branch 'master' of https://github.com/econsultancy/mail into econsultancy-master
Updating changelog