Add .rspec file to repo root

Without this patch we don't get an opinionated rspec behavior.  This
patch makes the behavior of `rake test` and `rspec spec/` opinionated
by including some default options.

diff --git a/.rspec b/.rspec
new file mode 100644 (file)
index 0000000..7ab5f55
--- /dev/null
+++ b/.rspec
@@ -0,0 +1,4 @@
+--color
+--format
+progress
+--backtrace