appveyor fix to make it execute tests again

(not green, but at least it executes)

License: MIT
Signed-off-by: Tarnay Kálmán <kalmisoft@gmail.com>

appveyor.yml

@@ -8,7 +8,7 @@ version: "{build}"
 
 os: Windows Server 2012 R2
 
-clone_folder: c:\go\src\github.com\ipfs\go-ipfs
+clone_folder: c:\gopath\src\github.com\ipfs\go-ipfs
 
 environment:
   GOPATH: c:\gopath