Remember command's optoins

Store options in file in home folder. 
Use just '.tddium' file, because when I save options and then user enter command without them I can't guess from what host use config file (e.x. '.tddium' or '.tddium.localhost').

https://bugs.tddium.com/bugzilla/show_bug.cgi?id=619
It's fine either with flags or without.

The problem is that `method_option` in thor uses flags ( `tddium server:set --host HOST [--port PORT] [--proto PROTO] [--insecure]`) but the description on line 11 says that the command takes positional parameters without any flags (`tddium server:set HOST [PORT] [PROTO] [INSECURE]`). 

What happens when you run:

~~~
bin/tddium server:set foo.example.com 2345 https false
~~~

I'm pretty sure it won't actually save any settings, because options will be empty.