Merge pull request #67 from tech-conferences/dependabot/bundler/sinatra-2.2.0

Bump sinatra from 2.1.0 to 2.2.0

Author: nimzco

Gemfile.lock

@@ -219,7 +219,7 @@ GEM
     rack (2.2.3.1)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
-    rack-protection (2.1.0)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -298,7 +298,7 @@ GEM
       rack (>= 1.1)
       rubocop (>= 0.90.0, < 2.0)
     ruby-progressbar (1.11.0)
-    ruby2_keywords (0.0.4)
+    ruby2_keywords (0.0.5)
     rubyzip (2.3.0)
     sassc (2.4.0)
       ffi (~> 1.9)
@@ -322,10 +322,10 @@ GEM
       sinatra (>= 1.4.7)
     simple_command (0.1.0)
     simple_oauth (0.3.1)
-    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)
     spring (2.1.1)
     spring-watcher-listen (2.0.1)