feat(yegor256#228): rescue NotFound

steps/discover-repos.rb

@@ -104,16 +104,21 @@ def cooldown(opts, found)
 end
 
 def files_in_repo(github, repo, ref, path = '')
-  contents = github.contents(repo, { path: path, ref: ref })
-  count = 0
-  contents.each do |content|
-    if content[:type] == 'file'
-      count += 1
-    elsif content[:type] == 'dir'
-      count += files_in_repo(github, repo, ref, content[:path])
+  begin
+    contents = github.contents(repo, { path: path, ref: ref })
+    count = 0
+    contents.each do |content|
+      if content[:type] == 'file'
+        count += 1
+      elsif content[:type] == 'dir'
+        count += files_in_repo(github, repo, ref, content[:path])
+      end
     end
+    count
+  rescue Octokit::NotFound
+    puts "There is no contents inside #{repo}"
+    count
   end
-  count
 end
 
 puts 'Not searching GitHub API, using mock repos' if opts[:dry]