Issue #2196379 by longwave: Add new simpletest directory location in example.gitignore file .

example.gitignore

@@ -14,6 +14,9 @@ sites/*/settings*.php
 sites/*/files
 sites/*/private
 
+# Ignore SimpleTest multi-site environment.
+sites/simpletest
+
 # If you prefer to store your .gitignore file in the sites/ folder, comment
 # or delete the previous settings and uncomment the following ones, instead.
 
@@ -23,3 +26,6 @@ sites/*/private
 # Ignore paths that contain user-generated content.
 # */files
 # */private
+
+# Ignore SimpleTest multi-site environment.
+# simpletest