test: fix /tmp test to work on windows

Credit: @elidoran
Reviewed-By: @othiym23
PR-URL: #77

Author: elidoran

test/basic.js

@@ -1,6 +1,6 @@
 var nopt = require("../")
   , test = require('tap').test
-
+  , isWin = process.platform === 'win32'
 
 test("passing a string results in a string", function (t) {
   var parsed = nopt({ key: String }, {}, ["--key", "myvalue"], 0)
@@ -148,7 +148,7 @@ test("other tests", function (t) {
     ,["--color --logfd 7", {logfd:7,color:true}, []]
     ,["--color=true", {color:true}, []]
     ,["--logfd=10", {logfd:10}, []]
-    ,["--tmp=/tmp -tar=gtar",{tmp:"/tmp",tar:"gtar"},[]]
+    ,["--tmp=/tmp -tar=gtar", {tmp: isWin ? "C:\\tmp" : "/tmp",tar:"gtar"},[]]
     ,["--tmp=tmp -tar=gtar",
       {tmp:path.resolve(process.cwd(), "tmp"),tar:"gtar"},[]]
     ,["--logfd x", {}, []]