Install crontab w/ script

This adds a couple of new scripts: install-crontab.sh and update.sh. The
install-crontab script does exactly that -- it installs a new crontab
that runs the update script every 5 minutes. An update script was added
to simplify the crontab a bit and to ensure the Elixir update script is
executed from the correct directory.

1 files changed, 6 insertions, 0 deletions

diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..1ab0d52
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+SCRIPT_DIR="$(builtin cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
+
+cd "$SCRIPT_DIR"
+mix run update.exs