This commit adds a `-base64` option to the `consul kv get` command,
which base 64 encodes the output such that it can be processed by
terminal tools in the event that the data is binary. The flag defaults
to false.
I was reviewing some docs and found a few issues.
1. Fixed some spelling mistakes.
2. Re-formatted some paragraphs.
3. Changed some potentially loaded language.
4. Fixed some grammar issues.
5. Tried to consistently use syntax-highlighting.
6. Fixed post-period spacing.
7. Fixed some formatting issues and inconsistency.
8. All "notes" are either proper notes or re-written.
