Check update script.

diff --git a/update-check.sh b/update-check.sh
new file mode 100755 (executable)
index 0000000..0766979
--- /dev/null
+++ b/update-check.sh
@@ -0,0 +1,15 @@
+#! /bin/bash
+
+tag1=$1
+tag2=$2
+
+if [ -z "$tag1" ]; then
+       echo "Usage: $0 TAG1 [TAG2]"
+       exit 1
+fi
+
+if [ -z "$tag2" ]; then
+       tag2=master
+fi
+
+git diff $1 $2 -- Gemfile lib/authentication_strategies/bundles/Gemfile.* lib/backends/bundles/Gemfile.*