Merge pull request #42 from DannyBen/fix/ruby-2.7

Ruby 2.7 compatibilty

lib/runfile/dsl.rb

@@ -79,28 +79,28 @@ def execute(command_string)
 
     # Run a command, wait until it is done and continue
     #   run 'rails server'
-    def run(*args)
-      ExecHandler.instance.run(*args)
+    def run(cmd)
+      ExecHandler.instance.run cmd
     end
 
     # Run a command, wait until it is done, then exit
     #   run! 'rails server'
-    def run!(*args)
-      ExecHandler.instance.run!(*args)
+    def run!(cmd)
+      ExecHandler.instance.run! cmd
     end
 
     # Run a command in the background, optionally log to a log file and save
     # the process ID in a pid file
     #   run_bg 'rails server', pid: 'rails', log: 'tmp/log.log'
-    def run_bg(*args)
-      ExecHandler.instance.run_bg(*args)
+    def run_bg(cmd, pid: nil, log: '/dev/null')
+      ExecHandler.instance.run_bg cmd, pid: pid, log: log
     end
 
     # Stop a command started with 'run_bg'. Provide the name of he pid file you 
     # used in 'run_bg'
     #   stop_bg 'rails'
-    def stop_bg(*args)
-      ExecHandler.instance.stop_bg(*args)
+    def stop_bg(pid)
+      ExecHandler.instance.stop_bg pid
     end
 
     # Set a block to be called before each run. The block should return