git-merge-pr in git-merge-pr-0.4.0

- old
+ new

@@ -17,10 +17,13 @@
 require 'rugged'
 
 abort "Provide a PR number (no '#' tho)" if ARGV.empty?
 
 pr_num = ARGV.first
-remote = Rugged::Repository.new(Rugged::Repository.discover(Dir.pwd)).remotes.first.url
+
+remote_name = ENV.fetch("REMOTE_NAME", "origin")
+remotes = Rugged::Repository.new(Rugged::Repository.discover(Dir.pwd)).remotes
+remote = remotes.find{ |r| r.name.eql?(remote_name) }.url
 remote.sub!("git@github.com:", "https://github.com/")
 remote.sub!(/\.git$/, "")
 
 client = Octokit::Client.new(netrc: true)
 repo   = Octokit::Repository.from_url(remote)