Interpolate function calls returns string values in lower case

[Briareus]

goutil/jutil/commandLineParser.go

Line 249 in e532c35

func (parg *ParsedCommandArgs) Interpolate(str string) string {

Camelcase body elements are converted to lower case, probably for comparison purposes, but the returned string array only contains the lower case version of the element.

Sample input: {"memberId":"666555444"}
Interpolate function output: {"memberid":"666555444"}

[joeatbayes]

Go ahead and make this change and submit a pull request.