Adds .clang-format style for formatting files

README.md

@@ -38,3 +38,12 @@ Those political problems require a special development model:
 Take care of the sinqEPICsApp/src/sinq.dbd file. This is the one which differs mostly between 
 amorsim and master branches. 
 
+# Formatting
+
+Formatting is done via the [`.clang-format`](./.clang-format) file checked into
+the repository. One option to apply the formatting to a given file is via the
+command below.
+
+```
+clang-format -i -style=file <file>
+```