Update documentation

[aciddjus]

Few mostly grammatical fixes.

[Ovi]

@aciddjus, since we are updating documentation, let's also update this part to reflect new free tier (README.md#account-api):

{
 account_id: "1234567890",
 api_key: "your_secret_key",
 account_email: "email@company.com",
 account_status: "Active",
 plan_id: "free",
 plan_name: "Free Plan",
 plan_monthly_price: 0.0,
 searches_per_month: 100,
 plan_searches_left: 0,
 extra_credits: 100,
 total_searches_left: 10,
 this_month_usage: 100,
 this_hour_searches: 0,
 last_hour_searches: 0,
 account_rate_limit_per_hour: 100
} 

[ocvit]

Thank you @aciddjus!

There are so many other bad wordings, badly formatted lines and hardly readable/understandable code examples here. Should we fix them all? I can jump on it.

[aciddjus]

Thank you @aciddjus!

There are so many other bad wordings, badly formatted lines and hardly readable/understandable code examples here. Should we fix them all? I can jump on it.

@ocvit Yeah, for sure. Thanks for the help 👍

[jvmvik]

thanks for the contribution

[ocvit]

Thank you @jvmvik! 👍

[ocvit]

Thank you @jvmvik! 👍

We can remove Layout/FirstHashElementIndentation override in .rubocop.yml as it's not needed anymore. Otherwise LGTM!