add Gem lockfile to .gitignore

Joe Bowman · Joe Bowman · commit 22b206456ae9 · 2018-07-25T16:51:53.000+01:00
diff --git a/.gitignore b/.gitignore
@@ -101,3 +101,6 @@ ENV/
 
 # mypy
 .mypy_cache/
+
+# Ruby Gemfile.lock
+Gemfile.lock
