Update README.md

README.md

@@ -28,8 +28,9 @@ Then you can run the executable file "kmeans" with several arguments:
 - -tol <float>: tolerance, i.e. convergence criterion (default: 1.0E-4)
 
 Example:
-k-means on CPU: ./kmeans -t CPU -cpu-nt 20
-k-means on GPU: ./kmeans
+
+- k-means on CPU: ./kmeans -t CPU -cpu-nt 20
+- k-means on GPU: ./kmeans
 
 ## Corresponding papers
 The approaches and experiments are documented in the following paper.