Update

README.md

@@ -6,7 +6,7 @@ High-throughput elliptic curve cryptography software library using Advanced Vect
 Copyright © 2020 by University of Luxembourg.
 
 ### Software Authors
-Hao Cheng, Johann Groszschaedl, Jiaqi Tian (University of Luxembourg).
+Hao Cheng, Johann Groszschaedl and Jiaqi Tian (University of Luxembourg).
 
 ### Compiler
 Clang
@@ -16,3 +16,8 @@ Clang
     $ make
     $ ./test_bench
 ```
+
+### Clean
+```bash
+    $ make clean
+```
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