turned frequency into a string for json

sorter.rb

@@ -148,7 +148,7 @@ def process_file (file_name, binfile, type)
     sections.delete_at(0) #we can ignore the first chunk of text
     sections.each do |chunk|
       timestamp = chunk.lines.delete_if {|line| line == "\r\n"}[0] #pulling out the timestamp
-      timestamp.tr!('/','-').tr!(':','').tr!(' ','_') #remove slashes and colons from timestamp, replaces spaces with unserscores
+      timestamp.tr!('/','-').tr!(':','').tr!(' ','_') #remove slashes and colons from timestamp, replaces spaces with underscores
       timestamp.strip!
       output = Hash.new #Creating the output storage object
       outfile = file_name + '_' + timestamp
@@ -161,7 +161,10 @@ def process_file (file_name, binfile, type)
         output[key] = Hash.new
         output[key][:words] = bin_counter(bins[bin_number], text)
         output[key][:total] = count_total(output[key])
-        output[key][:frequency] = output[key][:total].to_f / output[:total_words].to_f
+        output[key][:frequency] = 0
+        #output[key][:frequency] = output[key][:total].to_f / output[:total_words].to_f if output[[:total_words] != 0
+        freq = output[key][:total].to_f / output[:total_words].to_f
+        output[key][:frequency] = freq.to_s
       end
       write_output_json(output,outfile + '-out.json')
       write_output_csv(output,outfile + '-out.csv')
@@ -176,10 +179,14 @@ end
 #
 #This method will process all .txt files in the supplied directory
 def process_dir(dir_name, binfile, type)
+  threads = []
   Dir.glob(dir_name + '*.txt') do |file_name|
+    threads << Thread.new do
       puts "Processing " + file_name
       process_file(file_name, binfile, type)
     end
+  end
+  threads.each { |thr| thr.join }
 end
 
 def generate_master_output(dir_name, binfile)