Added '''HttpRequestAction.GET''' and '''HttpRequestAction.POST''' static constants
Added constructUrl function which constructs url. It will append URL parameters in case method is set to '''GET'''
Added construct parameters function which constructs parameter if '''POST''' selected, otherwise it will assume that parameters are passed with url
Implemented url construction with GET and POST parameters
Added tests for GET parameter generation
Merge branch 'feature/httprequest-parameters' into develop