make: split between Darwin and Linux

There's a few things that are relevant to both OS, but there's also a
bunch of stuff specific to Linux. Split the file to make it easier to
maintain / read.

Also add a new gitconfig file to be included depending on the OS: since
Darwin is for work, let's use work email there, and personal email for
Linux.

1 files changed, 3 insertions, 0 deletions

diff --git a/gitconfig.twitter b/gitconfig.twitter
new file mode 100644
index 0000000..d95b398
--- /dev/null
+++ b/gitconfig.twitter
@@ -0,0 +1,3 @@
+[user]
+    name = Franck Cuny
+    email = fcuny@twitter.com