Add Romanian support (#215)

* romanian-support: start implementation

* romanian-support: implement basic merge and to_ordinal

* romanian-support: fix linting error

* romaniansupport: fix spacing for linter

* romanian-support: correct indent of error message

* romanian-support: add encoding to test file

* romanian-support: python2 fix: make strings in test unicode

* romanian-support: complete rough implementation

* romanian-support: pylint fixes

* romanian-support: fix tests for python2

* romanian-support: small fixes

* romanian-support: add romanian to readme

* ensure alphabetical order in readme

README.rst

@@ -97,8 +97,9 @@ Besides the numerical argument, there are two main optional arguments.
 * ``no`` (Norwegian)
 * ``pl`` (Polish)
 * ``pt_BR`` (Portuguese - Brazilian)
-* ``sl`` (Slovene)
+* ``ro`` (Romanian)
 * ``ru`` (Russian)
+* ``sl`` (Slovene)
 * ``tr`` (Turkish)
 * ``th`` (Thai)
 * ``vi`` (Vietnamese)