Merge pull request #3481 from hnakamur/v3/fix_readme_on_running_tests

v3: fix readme on running tests (fixes #3328)

Author: airween

README.md

@@ -217,10 +217,8 @@ the utilities, follow the commands listed below:
 
 ```shell
 $ cd /path/to/your/ModSecurity
-$ git submodule foreach git pull
-$ cd test
-$ ./regression_tests
-$ ./unit_tests
+$ git submodule update --init --recursive
+$ make check
  ```
 
 ### Debugging

configure.ac

@@ -68,8 +68,7 @@ AC_MSG_ERROR([\
 
   You can download libInjection using git:
 
-     $ git submodule init
-     $ git submodule update
+     $ git submodule update --init --recursive
 
    ])
 fi
@@ -90,8 +89,7 @@ AC_MSG_ERROR([\
 
   You can download Mbed TLS using git:
 
-     $ git submodule init
-     $ git submodule update
+     $ git submodule update --init --recursive
 
    ])
 fi