update Readme with source path

README.md

@@ -189,6 +189,8 @@ Options:
  libraries.
  --appPath <path> Path to folder containing the application executable
  and libraries.
+ --sourcePaths <paths> Colon separated list of extra paths to the source
+ code.
  --arch <path> Architecture to use for unwinding.
  --exportTo <path> Path to .perfparser output file to which the input
  data should be exported. A single input file has to
@@ -326,6 +328,9 @@ For easier navigation, you can simply click on a line and the other view will ju
 You can follow function calls with a double click.
 In the sourcecode view you can press ctrl+f or press the search icon to open a search window.
 
+If you have the sources in different directory, you can use `--sourcePaths` or the settings to
+select tell the disassembler to search there for the source code.
+
 ## Known Issues
 
 If anything breaks in the above and the output is less usable than `perf report`, please