gitlab-exporter in gitlab-exporter-10.2.0

- old
+ new

@@ -1,9 +1,10 @@
 #!/usr/bin/env ruby
 
 $LOAD_PATH.unshift File.expand_path("../lib", __dir__)
 
 require "rubygems"
+require "bundler"
 require "bundler/setup"
 require "optparse"
 require "gitlab_exporter"
 
 def main