def read_host(filename="#{Etc.getpwuid.dir}/.nexus_host")
      fn = File.expand_path(filename)
      abort("Please create the file #{filename} and add your nexus host") if not File.exists?(filename)
      begin
        File.open(fn, 'r') { |f|  f.read }.strip
      rescue Exception => e
        raise(e)
      end
    end
def read_host(filename="#{Etc.getpwuid.dir}/.nexus_host")
      fn = File.expand_path(filename)
      abort("Please create the file #{filename} and add your nexus host") if not File.exists?(filename)
      begin
        File.open(fn, 'r') { |f|  f.read }.strip
      rescue Exception => e
        raise(e)
      end
    end
read host will read ~/.nexus_host file and