Merge pull request #53 from surtich/iris-grunt

Primera versión de la documentación completada
iris.date: If date is null print empty string, if date is not a object not convert it to number automatically
Fixed iris.translations paramater
Improved test functions
Fixed indexOf in IE bug, added iris.AFTER_NAVIGATION
iris.AFTER_NAVIGATION, fixed hashchange event callback
Improved tests
Merge branch 'iris-grunt' of https://github.com/iris-js/iris into iris-grunt

Conflicts:
	docs/es/README.md