check if projparams is unicode string
check if projparams is unicode string

In Python 2.7 "str" and "unicode" are two different type of objects.
If proj4 init *unicode* string is provided to Proj object it will treat it as a dictionary and fail.
Checking for whether the string is 'str' or 'unicode' solves the problem.
ocefpaf/pyproj,pyproj4/pyproj,ocefpaf/pyproj,pyproj4/pyproj