add up-to-date usage example

README.md

@@ -2,7 +2,28 @@ clojure matrix-repl thing, the last two methods in src/matrix/core.clj are the o
 
 src/matrix/core.clj is the only file with interesting stuff
 
-\*actual\* usage example:
+current version's usage example (only the first line is user-input):
+```
+[[3 1 1 2] [1 -2 1 4] [-1 1 0 4]]
+Steps:
+1/3R₁
+-1R₁ + R₂
+R₁ + R₃
+-3/7R₂
+-4/3R₂ + R₃
+7/5R₃
+-1/3R₃ + R₁
+2/7R₃ + R₂
+-1/3R₂ + R₁
+Final:
+┏                         ┓
+┃     1     0     0 -14/5 ┃
+┃     0     1     0   6/5 ┃
+┃     0     0     1  46/5 ┃
+┗                         ┛
+```
+
+OLD \*actual\* usage example:
 ```
 matrix.core=> (matrix-repl [[1 1 -1 -5] [5 -1 1 -1] [-1 3 -2 1]] :yeah)
 ┏               ┓