Merge pull request #57 from splitrb/dependabot/bundler/sinatra-2.2.0

Bump sinatra from 2.1.0 to 2.2.0

Author: andrehjr

Gemfile.lock

@@ -4,15 +4,15 @@ GEM
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
     rack (2.2.3)
-    rack-protection (2.1.0)
+    rack-protection (2.2.0)
       rack
     redis (4.5.1)
     ruby2_keywords (0.0.5)
     rubystats (0.3.0)
-    sinatra (2.1.0)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     split (4.0.1)
       redis (>= 4.2)