* [NOD-494] Updated main README.md
* [NOD-494] Updated blockdag/README.md
* [NOD-494] Aligned text length in main README.md
* [NOD-494] Updated most remaining packages READMEs + deleted util/coinset
* [NOD-494] Update integration README
* [NOD-494] Did a final pass over all readmes
* [NOD-494] Updated README for DNSSeeder with more info on how to create a functioning setup
* [NOD-494] Remove all double spaces from readmes
* [NOD-494] Minor fixes in READMEs + update license to kaspanet developers
* [NOD-494] Add backtick around ecc and util in hdkeychain README
* [DEV-97] Moved github.com/daglabs/btcutil into github.com/daglabs/btcd/btcutil.
* [DEV-97] Updated Gopkg.toml to no longer refer to btcutil.
* [DEV-97] Renamed btcutil to util.