Changed strings.Contains(?, "{") to bytes.IndexOf(?, '{')>-1
Remove extraneous character that got added to comment.
Return pointers to structs
Update doc.go to use proper btcjson result type
Merge branch '21-ReadResultCmd-consisten-retval' of github.com:GeertJohan/btcjson into 21-ReadResultCmd-consisten-retval

Conflicts:
	jsonresults.go