old_contents: var exec = require('child_process').exec;
  
  exec('git rev-parse --abbrev-ref HEAD', function (error, branch) {
      if (branch === "master") process.exit(0);
      else {
          console.log("Branch is not master, failing....");
          process.exit(1);
      }
  });
new_contents: var exec = require('child_process').exec;
  
  exec('git rev-parse --abbrev-ref HEAD', function (error, branch) {
      if (branch === "master\n") process.exit(0);
      else {
          console.log("Branch is not master, failing....");
          process.exit(1);
      }
  });
subject: Include newline in master check script