def partial( template, data={} )
            context = self.class.new( @directory, data )
            ErbLatex::File.evaluate(Pathname.new(template), context.getBinding, @directory)
        end
def partial( template, data={} )
            context = self.class.new( @directory, data )
            ErbLatex::File.evaluate(Pathname.new(template), context.getBinding, @directory)
        end
create new Context
 @param directory [String] directory to use as a base for finding partials
 @param data [Hash]
 include another latex file into the current template