diff --git a/classes/nvd_downloader.rb b/classes/nvd_downloader.rb
index 68ce2fe..df3cdfc 100644
--- a/classes/nvd_downloader.rb
+++ b/classes/nvd_downloader.rb
@@ -1,80 +1,83 @@
 require 'rest-client'
 require 'zlib'
 require 'json'
+require '../modules/nvd_tools'
 
-class NvdDownloader
+module NvdTools
+  class NvdDownloader
     attr_accessor :version, :base_url, :base_filename, :years, :filenames_json
-
+    
     MIN_YEAR = '2002'
     MAX_YEAR = '2019'
     AVAILABLE_YEARS = (MIN_YEAR..MAX_YEAR).to_a
     JSON = 'json.gz'
-
+    
     def initialize
-        @version = "1.0"
-        @base_url = "https://nvd.nist.gov/feeds/json/cve/#{version}/"
-        @base_filename = "nvdcve-#{version}-"
-        @years = self.years
-        @filenames_json = self.filenames(JSON)
+      @version = "1.0"
+      @base_url = "https://nvd.nist.gov/feeds/json/cve/#{version}/"
+      @base_filename = "nvdcve-#{version}-"
+      @years = self.years
+      @filenames_json = self.filenames(JSON)
     end
-
+    
     def years
-        year = NvdDownloader::AVAILABLE_YEARS.map do |year|
-            [year.to_i, year]
-        end.to_h
+      year = NvdDownloader::AVAILABLE_YEARS.map do |year|
+        [year.to_i, year]
+      end.to_h
     end
-
+    
     def filenames(extension)
-        year_filenames = years.map do |k, year|
-            "#{base_filename}#{year}.#{extension}"
-        end
-
-        other_filenames = [ 
-            "#{base_filename}recent.#{extension}",
-            "#{base_filename}modified.#{extension}"
-        ]
-
-        year_filenames + other_filenames
+      year_filenames = years.map do |k, year|
+        "#{base_filename}#{year}.#{extension}"
+      end
+      
+      other_filenames = [ 
+        "#{base_filename}recent.#{extension}",
+        "#{base_filename}modified.#{extension}"
+      ]
+      
+      year_filenames + other_filenames
     end
-
+    
     def get(url)
-        r = RestClient.get "#{base_url}#{url}"
-        r.body if r.code == 200
+      r = RestClient.get "#{base_url}#{url}"
+      r.body if r.code == 200
     end
-
+    
     def read_gzip_stream(gzip_stream)
-        io_stream = StringIO.new(gzip_stream)
-        gz = Zlib::GzipReader.new(io_stream)
-        gz.read
+      io_stream = StringIO.new(gzip_stream)
+      gz = Zlib::GzipReader.new(io_stream)
+      gz.read
     end
-
+    
     def write_to_file(parsed_json, file_path)
-        File.write(file_path, parsed_json)
+      File.write(file_path, parsed_json)
     end
-
+    
     def parse_json(json_string)
-        JSON.parse(json_string)
+      JSON.parse(json_string)
     end
-
+    
     def one_time_import
-        # this should be a method that does a one-time import
-        # of all of the json.gz from each year + recent + modified json feeds
+      # this should be a method that does a one-time import
+      # of all of the json.gz from each year + recent + modified json feeds
     end
-
+    
     def modified_meta
-        # this should be a method that builds 
-        # the modified filename with the meta file extension included
+      # this should be a method that builds 
+      # the modified filename with the meta file extension included
     end
-
+    
     def check_metafile(metafile)
-        # open the metafile, build a hash of k/v pairs of the data inside of the file
-        # check each k/v pair against the file on disk
-        # return a new hash with the same k as before, but the value being a boolean true or false if the value from the k/v pair
+      # open the metafile, build a hash of k/v pairs of the data inside of the file
+      # check each k/v pair against the file on disk
+      # return a new hash with the same k as before, but the value being a boolean true or false if the value from the k/v pair
     end
-
+    
     def detect_changes(metafile)
-        # this should be a method that detects changes in the metafile. 
-        # run the check_metafile method against the current metafile on disk.
-        # if there is a change, return true, if not return false
+      # this should be a method that detects changes in the metafile. 
+      # run the check_metafile method against the current metafile on disk.
+      # if there is a change, return true, if not return false
     end
+  end
 end
\ No newline at end of file
diff --git a/modules/nvd_tools.rb b/modules/nvd_tools.rb
new file mode 100644
index 0000000..5a22758
--- /dev/null
+++ b/modules/nvd_tools.rb
@@ -0,0 +1,2 @@
+module NvdTools
+end