Version 1.9.4 released

• images now have their own folder instead of being mixed with the stylesheets; thanks to Maxime Pasquier
• icon position can now be also set to the left of the element; thanks to Jennifer for suggesting
• added possibility to easily apply custom classes to date ranges - see the newly added custom_classes property; thanks to Märt Tibar for suggesting
• the library is now also available as a npm package
• fixed a bug that made impossible to install the library via Bower