Added documentation link for ssh helper plugin and further cleanup

plugins/README.markdown

@@ -31,6 +31,7 @@
 * __rbenv__ – [rbenv](https://github.com/sstephenson/rbenv) Ruby environment/version manager.
 * __replace__ – A port of [replace](https://github.com/thoughtbot/dotfiles/blob/master/bin/replace).
 * __rvm__ – [RVM](http://rvm.io) Ruby version manager.
+* __ssh__ – ssh conservative $TERM value helper.
 * __sublime__ – Creates `subl` command line shortcut to launch [Sublime Text editor](http://sublimetext.com/).
 * __tmux__ – Plugin to start tmux with support for 256 colours.
 * __vi-mode__ – Basic vi key bindings emulation for fish.

plugins/ssh/README.md

-## ssh conservative $TERM value helper plugin
+## ssh conservative $TERM value helper 
 
 Due to inconsistency of 256 color terminal support across
 terminal applications, it may be desirable to force the 

plugins/ssh/ssh.fish

 function ssh --description 'OpenSSH SSH client (remote login program) with a conservative $TERM value'
   switch $TERM
     case screen-256color 
-        set -l -x TERM screen
+        set -lx TERM screen
         command ssh $argv
     case xterm-256color
-        set -l -x TERM xterm
+        set -lx TERM xterm
         command ssh $argv
     case '*' 
       command ssh $argv