Cannot run test on windows

[bai-yingzhao]

@Skadabr
I tried to run test on windows platform as per the instruction in readme, but the test cannot be executed. I got the following warning and error:

D:\garden>node garden.js test
WARNING: NODE_ENV value of 'test' did not match any deployment config file names
.
WARNING: See https://github.com/lorenwest/node-config/wiki/Strict-Mode
info: Command: test, env: test
'NODE_ENV' is not recognized as an internal or external command,
operable program or batch file.