add BIP32 example

...and also update BIP32.seed to default to mainnet/livenet.
add BIP32 example to examples tests
correct typo: "knowan" -> "known"
Merge pull request #206 from ryanxcharles/feature/BIP32-example

BIP32 example (hierarchical deterministic wallets)
update version to 0.1.9

The major changes in this version are:
* A new TransactionBuilder class to make it easy to make any kind of
 transaction.
* BIP32 - hierarchical deterministic wallets.
* Further progress towards full test coverage and 100% compatibility with
 bitcoin core.
Merge pull request #207 from ryanxcharles/feature/version-0.1.9

update version to 0.1.9
adding new data file from bitcoin core
some hashForSignature tests passing! :D
fixed SignatureHash tests!!!!!
fix old tests for sighash
remove console.logs
add sorting of pubkeys for multisig addr generation
add test imported from treasure
fix noSorting, add testcase against bitcoind output
Merge pull request #209 from matiu/bug/sort-pubkeys-in-multisig

Bug/sort pubkeys in multisig
tracking Transaction test problems
tracking down Transaction test problems
adding new data file from bitcoin core
some hashForSignature tests passing! :D
fixed SignatureHash tests!!!!!