Write Documentation

[UnitylChaos]

• What are BGLS signatures
• How our Authentication scheme works, and why this is correct
• Multi Signature vs Aggregate Signature
• Our API - subtleties include allowance of duplicates in AggSig / when to authenticate
• Describe our point compression format, and that we use the leading bit of each field in G1 / G2
• Describe the type of pairing in alt bn128 (type 3, optimal ate)

[ValarDragon]

The various authentication schemes have been explained in 0e87e88. The API explanation has some explanation from the godocs also. (Not sure if more may or may not be needed)

[ValarDragon]

I added an explanation of multi signatures vs aggregate signatures in c61bcd6 .

Also, the readme needs to be split up between bgls, and the curve implementation details, and placed into the respective packages. Also, the repository name should be renamed, since our intention is to include more pairing based cryptography applications here.