[fix] inconsistency over create/update datastream (close #3)
[fix] The csv encode will take the datapoint value type into consideration (close #7)
[fix] The datastream_id wasn't used by the snprintf
[fix] Unapropriate qualificator for the function argument
Merge pull request #8 from xively/fix-iss-inconsistency-of-arguments

[fix] Inconsistency of arguments (close #3 and close #7)