Add Taxonomy class

Added Taxonomy class to store all the nodes that are in the
taxonomy.xml file.
Added unit tests as well.
Add destination class

Created class for generating a destination html template
Add template files

Added ERB template and XSLT file for processing the destination
information.
Add utility methods to Taxonomy

Added couple of utility methods to access quickly to a taxonomy data
Add TaxonomyProcessor class

Created a class for processing the XML files and generate the HTML in
the output folder.
Replace double quotes with single quotes

Just a quick replace of double quotes in require instructions and
strings