[Documentation] Add Binary Literals to grammar.

[AdamSpeight2008]

The grammar doesn't have definition for Binary Literals.

BinaryDigit
    : '0' | '1'
    ;

BinaryLiteral
    : '&' 'B' BinaryDigit+
    ;

IntegralLiteralValue
    : IntLiteral
    | HexLiteral
    | OctalLiteral
    | BinaryLiteral
    ;

[AnthonyDGreen]

Thanks @AdamSpeight2008!

[AnthonyDGreen]

@AdamSpeight2008 I made a branch for VB14. Do you want to send a PR to update the literal section for this to break it in?

[AdamSpeight2008]

@AnthonyDGreen I'll have a look later on. Is the specification for digit separator available.?

[AdamSpeight2008]

#40