Basic Spanish Translation (simshaun#100)

* Basic Spanish Translation

* added day_month function to es translation

Account for start date in text transformer to make for clearer output (…

…simshaun#101)

Fix broken Travis, PHP 5.3

Minor tweak to README for v1

Throw exception if rrule with nth BYDAY and unsupported frequency

Danish translation (simshaun#97)

* Added Danish translation

* changes da translation

Added dutch language (simshaun#96)

* Added dutch language
* Update nl.php

Merge pull request simshaun#76 from emnsen/patch-1

Turkish translation

BC break - Move virtualLimit to ArrayTransformerConfig

Support for RDATE