Fixing CSV generation. Also add column names to the CSV output. (#309)

Author: spier

api/ruby/find-inactive-members/find_inactive_members.rb

@@ -210,21 +210,27 @@ def member_activity
 
     # open a new csv for output
     CSV.open("inactive_users.csv", "wb") do |csv|
+      csv << ["login", "email"]
       # iterate and print inactive members
       @members.each do |member|
         if member[:active] == false
-          member_detail = "#{member[:login]},#{member[:email] unless member[:email].nil?}"
+          member_detail = []
+          member_detail << member[:login]
+          member_detail << member[:email] unless member[:email].nil?
           info "#{member_detail} is inactive\n"
-          csv << [member_detail]
+          csv << member_detail
         end
       end
     end
 
     CSV.open("unrecognized_authors.csv", "wb") do |csv|
+      csv << ["name", "email"]
       @unrecognized_authors.each do |author|
-        author_detail = "#{author[:name]},#{author[:email]}"
+        author_detail = []
+        author_detail << author[:name]
+        author_detail << author[:email]
         info "#{author_detail} is unrecognized\n"
-        csv << [author_detail]
+        csv << author_detail
       end
     end
   end