Update 'README.md'

README.md

@@ -1,2 +1,21 @@
 # matrices
-
+This is a matrix class.
+```
+g++ -o matrix matrix.cpp           
+./matrix
+```
+The output:
+```
+The matrix m:
+| 7 | 5 | i |
+| 0 | 2 | 0 |
+| -i | 0 | 4 |
+The matrix m's transpose:
+| 7 | 0 | -i |
+| 5 | 2 | 0 |
+| i | 0 | 4 |
+The matrix m is not hermitian, here is the hermitian conjugate:
+| 7 | 0 | i |
+| 5 | 2 | 0 |
+| -i | 0 | 4 |
+```