Launch fixes

[tomgilder]

• Updates readme: adds badges and updates screenshot
• Fixes a typo
• Bumps version

[codecov[bot]]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage :thumbsup:

Coverage data is based on head (c03c823) compared to base (3fae2c3). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #17 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 8 8 Lines 270 270 ========================================= Hits 270 270 ``` | [Impacted Files](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/17?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio) | Coverage Δ | | |---|---|---| | [lib/src/checkers/semantic\_label\_checker.dart](https://codecov.io/gh/rebelappstudio/accessibility_tools/pull/17/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio#diff-bGliL3NyYy9jaGVja2Vycy9zZW1hbnRpY19sYWJlbF9jaGVja2VyLmRhcnQ=) | `100.00% <ø> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=rebelappstudio)

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