There is some sort of timing issue when spinning up the monero containers on
github CI. I do not know exactly what is the cause but we have a configurable
'additional sleep time' already available for `testcontainers` that can resolve
this issue.
Use the environment variable MONERO_ADDITIONAL_SLEEP_PERIOD to tell
`testcontainers` to wait an additional 60 while bringing up the monero
container.
Update the readme inline with review suggestions by doing:
- Copy 'long story short' text from blog post
- Correct the erroneous description of watching blockchains
- Fix gramar