Formatting the translation key whenever arguments are passed.

In some applications it is easier to use the key as a human readable string,
which can contain formatting placeholders. With this feature the developer
will be able to see immediate feedback of their translation messages without
having to translate to a specific locale beforehand.
Merge pull request #11 from lorenzo/feature/format-key

Formatting the translation key whenever arguments are passed.
Replace tab with space to keep consistency
Merge pull request #12 from lorenzo/patch-2

Replace tab with space to keep consistency
add expects() to fix failing test
close php tags in examples
update meta for 1.1 release
updated composer
update composer with version 1.1.0
Merge branch '1.1.0'