More README.md improvements
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Merge branch 'develop'
Removing invalid authors from composer.json
Update Makefile
Merge branch 'develop'

Conflicts:
	Makefile (Respect/Foundation update)
	composer.json (Contributors merged)

Intended to be the release 0.5.0 as pointed out on #137 and #134.
Update version to 0.5.0 on composer.json.

And package.ini (although it need more tweeks).

On composer.json I removed the version declaration, since it is taken
from Git Tags (by Packagist) and added keywords to ease the search.

PS: I have a (big and bad) feeling this will break Travis because of
Respect/Foundation.
Skip instead of fail if Zend/Validator is not present.

It makes more sense to skip a test that can't be executed than failing
indicating a problem with the test suite.
Added some packagist bling

poser badges as provided by https://poser.pugx.org/
Moved badges to fit screen width
Update copyright date
Merge pull request #143 from cloudson/patch-1

Update copyright date to 2014.
Updates README introduction.

With the discussion on reddit about Respect/Validation being the most
awesome validation engine and also with a more accurate number of
current rules.
Authors on composer.json are now resumed to a link.

Instead of keeping the file up to date and confusing ourselves with
changes to the file on the version control, the author's not point to
GitHub list of contributors.
Add PHPUnit as a development dependency on composer.json.

We can always use Respect/Foundation, but with that component on
composer.json I think it is easier for new contributors to get things
running on their development environment.
Fix grammar error on `README.md`.

Fix phrase "given data is a file (that) was uploaded" on `uploaded`
validation rule.
Add "skipTldCheck" option for Domain rules.

Allowing validator for local domains like "machine.dev", but the default
behavior of the rule still the same: it validates TLDs, so domains will
only be valid (by default) if the TLD is a valid one.

The signature of rule (using the builder) changes from:

    v::domain() // Still works, same behavior as before.

To:

    v::domain(false) // Skips TLD check.

Fix #33.
Add TLDs "post" and "xxx".