docs: Add testimonials

README.md

@@ -61,6 +61,24 @@ Licensed under either of
 
 at your option.
 
+### Testimonials
+
+fitzgen
+> assert_cmd is just such a pleasure to use every single time, I fall in love all over again
+>
+> bravo bravo WG-cli
+
+passcod 
+> Running commands and dealing with output can be complex in many many ways, so assert_cmd smoothing that is excellent, very much welcome, and improves ergonomics significantly.
+
+volks73 
+>  I have used [assert_cmd] in other projects and I am extremely pleased with it
+
+coreyja 
+> [assert_cmd] pretty much IS my testing strategy so far, though my app under test is pretty small.
+>
+> This library has made it really easy to add some test coverage to my project, even when I am just learning how to write Rust!
+
 ### Contribution
 
 Unless you explicitly state otherwise, any contribution intentionally