using class instead of dynamic proxy
using Base Quantity
fixes import
Merge pull request #13 from otaviojava/proxy_2_class

using class instead of dynamic proxy[Sugestion]
3: Move OutputHelper to util 

Task-Url: https://github.com/unitsofmeasurement/unit-ri/issues/issue/3
13: using class instead of dynamic proxy

Task-Url: https://github.com/unitsofmeasurement/unit-ri/issues/issue/13
12: Right-scale RI class versions 

Task-Url: https://github.com/unitsofmeasurement/unit-ri/issues/issue/12