1. the description of the command and the helper function are
clear hints that the command is intended to show a single JSON
measurement at a time (also the use case seems clear) [*]
2. the function used to read lines was failing for all my
measurements that take input. Since that was not the optimal
pattern anyway, use a better pattern to fix it.
3. some changes are automatically applied by my editor (VSCode
with the Go plugin) and I am fine with them.
4. while reading code, I also applied my preferred pattern
wrt whitespaces, i.e.: no whitespace inside functions, if a
function feels too long in this way, just break it.
Closes#57
[*] Even if we want to show many measurements at a time, which
does not seem needed, given the UI patterns, this functionality
won't be P0. What is P0 is to bless a new beta and give to
@sarathms binaries for all archs that support a basic `show`.
This is the command I used:
```
rg 'github.com/openobservatory/gooni' --files-with-matches \
| xargs sed -i '' 's/github.com\/openobservatory\/gooni/github.com\/ooni\/probe-cli/g'
```
