EmailValidator: use structured answer.
PigLatin: add structured answer.
GreatestCommonFactor: use structured answer.
CallingCodes: use structured answer.
Paper: use structured answer
Fortune: use structured answer.
BirthStone: use structured answer
Coin: use structured answer.
Base: use structured answer.
Rot13: use structured answer
Sha: add structured answer
Roman: add structured answer
Binary: use structured answer.
GUID: add structured answer.
GenerateMAC: add structured answer.
RandomNumber: add structured answer.
Conversions: use structured answer.
Calculator: add structured answer.
Fortune: Updated fortunes file

Made some corrections where terminating character (%) was not present.
Fixed typos.
Made some formatting corrections