fix script install fish

[renatoassis01]

Hi
I found where I was wrong I hope it helps

[bacongobbler]

The script seems to run just fine on linux without this fix:

><> docker run -itv $PWD:/go/src/github.com/fishworks/fish -w /go/src/github.com/fishworks/fish golang:1.10
root@6a863654c550:/go/src/github.com/fishworks/fish# ./scripts/install.sh
Downloading https://gofi.sh/releases/gofish-v0.2.0-linux-amd64.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100 2822k  100 2822k    0     0   137k      0  0:00:20  0:00:20 --:--:-- 88780
Preparing to install into /usr/local/bin
gofish installed into /usr/local/bin/gofish
Run 'gofish init' to get started!
root@6a863654c550:/go/src/github.com/fishworks/fish# gofish tank
export FISH_HOME="/usr/local/Fish"
export FISH_BARREL="/usr/local/Fish/Barrel"
export FISH_RIGS="/usr/local/Fish/Rigs"
export FISH_DEFAULT_RIG="/usr/local/Fish/Rigs/github.com/fishworks/fish-food"
# Run this command to configure your shell:
# eval $(gofish tank)

Let's follow up in #42 to try to figure out the issue.

[renatoassis01]

I was able to install it manually.
Fish is an incredible project ;)