Added asdf plugin for completions

.zshrc

@@ -14,7 +14,7 @@ case "`uname`" in
 	alias df='df -x squashfs -x tmpfs -x devtmpfs'
 	alias mount='mount -t ext3,ext4,cifs,nfs,nfs4,zfs,vfat,btrfs'
 	alias open=xdg-open
-	plugins=(battery golang zsh-syntax-highlighting)
+	plugins=(asdf battery golang zsh-syntax-highlighting)
         ;;
     Darwin)
         test -e "${HOME}/.iterm2_shell_integration.zsh" && source "${HOME}/.iterm2_shell_integration.zsh"
@@ -128,4 +128,3 @@ fi
 # Remove duplicate entries in the PATH
 typeset -U path
 
-