The module installer leaves .zip packages in the vendor folder

[odino]

Once extracted, zip modules can be deleted.

~/projects/abs (pr-291 ✔) ᐅ ./builds/abs get github.com/abs-lang/abs-sample-module
🌒  - Downloading archive
Unpacking...
Creating alias...This module could not be aliased because module of same name exists

Install Success. You can use the module with `require("./vendor/github.com/abs-lang/abs-sample-module")`
~/projects/abs (pr-291 ✔) ᐅ ls -la vendor/github.com/abs-lang/                 
total 16
drwxr-xr-x 3 alex alex 4096 Oct 15 12:24 .
drwxrwxr-x 8 alex alex 4096 Oct 15 12:24 ..
drwxr-xr-x 2 alex alex 4096 Oct 15 12:24 abs-sample-module
-rw-rw-r-- 1 alex alex  817 Oct 15 12:25 abs-sample-module-master.zip
~/projects/abs (pr-291 ✔) ᐅ 

cc @mingwho