Release v1.0.4

• Added TOC to README
• Reorganized/clarified text of README for easier reading
• Fixed speling mistakes in README
• Expanded README to include Contributing section
• Expanded README to include documentation for translating multiple strings in one call
• Expanded README to include documentation for DTO methods and helpers
• FluencyMarkup now accepts null for $classes parameter
• FluencyMarkup now removes empty HTML attributes on render
• The module method renderLanguageLinks now adds active class to <li> element containing the current page language rather than the <a> element contained within it.
• When when a divider value is passed to renderLanguageLinks, the <li> element is given a divider class
• Added missing parameter description to docblock for renderLanguageLink