ysqi cd31c816cc Config support get environment variable ...

get environment variable if config item  has prefix "$ENV_" .
e.g.
```ini
[demo]
password = $ENV_MyPWD
```

2016-01-27 20:46:30 +08:00

..

xml_test.go

Config support get environment variable

2016-01-27 20:46:30 +08:00

xml.go

Config support get environment variable

2016-01-27 20:46:30 +08:00