Merge pull request #203 from PlasmaFAIR/docs/readme_boasting

Add sales-pitch to README

README.md

@@ -3,7 +3,18 @@
 
 # Fortitude
 
-A Fortran linter, written in Rust :crab: and installable with Python :snake:.
+A Fortran linter, inspired by (and built upon) [Ruff](https://github.com/astral-sh/ruff).
+Written in Rust :crab: and installable with Python :snake:.
+
+- :zap: Blazingly fast, up to hundreds of times faster than other open-source Fortran
+  linters.
+- :wrench: Automatically fixes linter warnings.
+- :chart_with_upwards_trend: 30+ rules, with many more planned.
+- :page_with_curl: Multiple output formats, including SARIF and GitHub/GitLab CI.
+- :handshake: Follows [community best
+  practices](https://fortran-lang.org/en/learn/best_practices/).
+- :muscle: Built on a robust [tree-sitter](https://tree-sitter.github.io/tree-sitter/)
+  parser -- even syntax errors won't stop it!
 
 ## Table of Contents