readme: add logo (#322)

per @jvehent logo is licensed for public use
2020-08-06 13:39:45 -04:00 · 2020-08-06 13:39:45 -04:00 · dbeab0601b
--- a/README.md
+++ b/README.md
@ -1,5 +1,7 @@
 # Frost

+![frost snowman logo](docs/frost-snowman-logo.png?raw=true)
+
 Clients and [pytest](https://docs.pytest.org/en/latest/index.html)
 tests for checking that third party services the @foxsec team uses are
 configured correctly.
--- a/docs/frost-snowman-log.png
+++ b/docs/frost-snowman-log.png