Allowing arguments to be passed to _python

I'm brand new to fish so I'm not sure if this is a fix of if I'm doing something incorrectly.  On fish version 2.1.0 on osx 10.9.2 running pyhttp doesn't start the http server, instead only starts the python shell.  This fixes that issue for me at least.
Merge pull request #149 from vincentjames501/master

Allowing arguments to be passed to _python
Adding gvm plugin
Two spaces as requested
Merge pull request #151 from vincentjames501/gvm_plugin
Added agnoster-mercurial theme with support for mercurial
mentioning mercurial on the documentation
Merge pull request #136 from sbstnp/master
add sprunge plugin
remove README.md frim sprunge plugin
change indentation from 4 to 2 spaces
Workaround for https://github.com/fish-shell/fish-shell/issues/1443
Merge pull request #131 from Paulloz/plugint
Add new theme toaster
Merge pull request #148 from steeeve/master
In robbyrussell, when last status is 0, the prompt should be green, otherwise it should be red, just like oh-my-zsh
Merge branch pull request #152 from bachue/robbyrussell_fish_prompt
Init theme edan
Update screenshot
Merge pull request #153 from amio/theme-edan