When a local feed is missing, give the user a hint about how to make the warning...
treeaa15bf5801540e60433913152437501b9b6dcbdd
-rwxr-xr-x 6044 0alias
-rw-r--r-- 2109 0alias.1
-rwxr-xr-x 93 0launch
-rw-r--r-- 7692 0launch.1
-rwxr-xr-x 2194 0store
-rwxr-xr-x 624 0store-secure-add
-rw-r--r-- 2714 0store-secure-add.1
-rw-r--r-- 4161 0store.1
-rw-r--r-- 26536 COPYING
-rw-r--r-- 964 MANIFEST.in
-rw-r--r-- 2115 README
drwxr-xr-x - applications
-rwxr-xr-x 2946 makedist
-rw-r--r-- 67 setup.cfg
-rw-r--r-- 2405 setup.py
drwxr-xr-x - tests
drwxr-xr-x - zeroinstall