Darkcoin: corrected launch date and maximum coin supply, according to https://bitcointalk.org/index.php?topic=421615.0
Corrected case and added feature

I added here an additional novel feature of VeriCoin that directly relates to bitcoin, as an example how alt-coins can co-exist symbiotically with Bitcoin in the market.
grammar
be more precise about secp256k1 curve

(is also more consistent with further text in the chapter)
fix Mutli typo and grammar
Adding Chapter 9 to book index
Attempting clarification of 6 confirmation standard
Merge pull request #102 from schinzelh/darkcoin

Darkcoin: corrected launch date and maximum coin supply, according to ht...
Merge pull request #104 from ethers/ch4

Chapter 4
Merge pull request #103 from vericoin/patch-1

Corrected case and added feature
Merge pull request #105 from ethers/ch5

fix Mutli typo and grammar
Merge pull request #106 from jlopp/indexUpdate

Add Chapter 9 to book index
Merge branch 'confirmationClarification' of https://github.com/jlopp/bitcoinbook into jlopp-confirmationClarification
Change 'can not' to 'cannot'
Merge branch 'jlopp-confirmationClarification' into develop
Light copyediting/grammer/spelling mistakes
Changing Summer 2014 to mid-2014, since seasons have different meanings in different hemispheres
Update address definition

Addresses are the 160-bit hash of a public key, multisignature addresses begin with three (3).
README added
Add missing comma