Grammar changes (mostly) for ch05.asciidoc
minor grammar fixes ch05.asciidoc
Extract info from pk script example

Code example where we extract information from a public key script. Use
go run [filename].go to run every go example instead of go build.
grammar fixes for ch05.asciidoc
More info about btcd
Update ch06.asciidoc
grammar fixes for ch06.asciidoc
grammar fixes for ch05.asciidoc

This change still reads somewhat ambiguous. Although clearly lightweight clients don't contain a full blockchain, some mining nodes do.
Grammar changes for Chapter 6
Merge pull request #77 from kargakis/add-example

Extract info from pk script example
Merge pull request #79 from kargakis/btcd-info

More info about btcd
Resolving merge conflicts
Resolve merge conflicts in chapter 5
Merge branch 'develop' of https://github.com/aantonop/bitcoinbook into develop
Fix spelling of frequency hopping from Issue #82