2.6.0  read write binary

Two new functions added:
Read binary data from file
Write binary data to file. 

Also:  WriteAsciiToFile is now writing through the binary write function. 


It doesn't matter.  The ```std::exception&``` is "broader" but the same information will be in the e.what() since std::if stream::failure inherits std::exception.

ref: http://coliru.stacked-crooked.com/a/7381b6c89d05513f