* [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
The github markdown interpreter has been changed such that it no longer
allows spaces in between the brackets and parenthesis of links and now
requires a newline in between anchors and other formatting. This
updates all of the markdown files accordingly.
While here, it also corrects a couple of inconsistencies in some of the
README.md files.