#13 Fix problem with weird character on multiline prompt

[spothound]

Closes #13

Hello there,

While using powerline2 I've experienced that the multiline used symbol looks pretty bad in some terminal emulators, for example in terminator.

[marcoesposito1988]

Hi @grg121,

I had the same problem, thanks for figuring out the solution!

However, why not leave it configurable by the user? I am just trying out xonsh, but I guess this should do the trick:

$MULTILINE_PROMPT = '»' if 'MULTILINE_PROMPT' not in ${...} else $MULTILINE_PROMPT

[spothound]

Hello @marcoesposito1988

I agree with you, that would be a better approach, right!

Thanks.

[vaaaaanquish]

@grg121 @marcoesposito1988 Thanks for the contribution. LGTM