Merge pull request #2 from k-eex/master

support for startup commands from ~/.pronsolerc 
This adds support for an alias command

.pronsolerc

+# Sample .pronsolerc file - copy this into your home directory
+!self.do_alias = lambda aarg,self=self: setattr(self,"do_"+aarg.split()[0],lambda arg,self=self,a=aarg.split(None,1)[1]:self.onecmd(" ".join((a,arg))))
+alias up move Z 10
+alias loud !self.loud = 1
+alias quiet !self.loud = 0

pronsole.py

@@ -74,6 +74,13 @@ class pronsole(cmd.Cmd):
         cmd.Cmd.postloop(self)
     
     def preloop(self):
+        try:
+            with open(os.path.join(os.path.expanduser("~"),".pronsolerc")) as rc:
+                for rc_cmd in rc:
+                    if rc_cmd.lstrip()[0] != "#":
+                        self.onecmd(rc_cmd.rstrip(r"\r\n"))
+        except IOError:
+            pass
         print "Welcome to the printer console! Type \"help\" for a list of available commands."
         cmd.Cmd.preloop(self)