Add file describing Signed-off-by and guiding new module authors.
-rw-r--r-- 357 .gitignore
-rw-r--r-- 184 .travis.yml
-rw-r--r-- 3870 Makefile
-rw-r--r-- 2735 Makefile-ccan
-rw-r--r-- 3873 Makefile-web
-rw-r--r-- 2326 PATCHES
-rw-r--r-- 296 README
drwxr-xr-x - ccan
drwxr-xr-x - doc
drwxr-xr-x - junkcode
drwxr-xr-x - licenses
drwxr-xr-x - tools
drwxr-xr-x - web