Changes to CONTRIBUTING.md. All files

CONTRIBUTING.md

@@ -14,3 +14,13 @@ The test suite uses [Cram](https://bitheap.org/cram/). You'll need to build ag first, and then you can run the suite from the root of the repository :      make test++### Adding filetypes++Ag can search files which belong to a certain class for example `ag --html test` +searches all files with the extension defined in [lang.c](src/lang.c).++If you want to add a new file 'class' to ag please modify [lang.c](src/lang.c) and [list_file_types.t](tests/list_file_types.t).++`lang.c` adds the functionality and `list_file_types.t` adds the test case. +Without adding a test case the test __will__ fail.