Update README - syntax correction and cleanup

Jan Breuer

2012-12-04 697414b42a36a0c529bd1c95d82c81a09bfb0ec9

 scpi/scpi_units.h

@@ -43,6 +43,9 @@
extern "C" {
#endif

    extern const scpi_unit_def_t scpi_units_def[];
    extern const scpi_special_number_def_t scpi_special_numbers_def[];
    
    bool_t SCPI_ParamNumber(scpi_t * context, scpi_number_t * value, bool_t mandatory);
    size_t SCPI_NumberToStr(scpi_t * context, scpi_number_t * value, char * str, size_t len);