Buxton Simple API Man Page For Setting Values

Added man page for buxtond_set_int32, buxtond_set_string, buxtond_set_uint32,
buxtond_set_int64, buxtond_set_uint64, buxtond_set_double, buxtond_set_float,
and buxtond_set_bool.

Slight modification to SEE ALSO section of buxtond_get_int32.3
Brushed up buxton-simp-api man page
Changed buxtond_remove_group2 to buxtond_remove_group