Update ruby version and showoff

.ruby-version

@@ -1 +1 @@
-2.3.0
+ruby-2.3.3

Gemfile.lock

@@ -1,27 +1,39 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.4.0)
+    addressable (2.5.1)
+      public_suffix (~> 2.0, >= 2.0.2)
     blankslate (3.1.3)
-    daemons (1.2.3)
+    commonmarker (0.14.4)
+      ruby-enum (= 0.5.0)
+    daemons (1.2.4)
     em-websocket (0.3.8)
       addressable (>= 2.1.1)
       eventmachine (>= 0.12.9)
-    eventmachine (1.0.9.1)
-    gli (2.13.4)
+    eventmachine (1.2.3)
+    fidget (0.0.4)
+      ruby-dbus
+    gli (2.16.0)
     htmlentities (4.3.4)
-    json (1.8.3)
-    mini_portile2 (2.0.0)
-    nokogiri (1.6.7.2)
-      mini_portile2 (~> 2.0.0.rc2)
+    i18n (0.8.1)
+    json (2.0.3)
+    mini_portile2 (2.1.0)
+    nokogiri (1.7.1)
+      mini_portile2 (~> 2.1.0)
     parslet (1.7.1)
       blankslate (>= 2.0, <= 4.0)
-    rack (1.6.4)
+    public_suffix (2.0.5)
+    rack (1.6.5)
     rack-protection (1.5.3)
       rack
-    redcarpet (3.3.4)
-    showoff (0.11.2)
-      gli (>= 1.3.2)
+    redcarpet (3.4.0)
+    ruby-dbus (0.13.0)
+    ruby-enum (0.5.0)
+      i18n
+    showoff (0.17.2)
+      commonmarker (<= 0.14.4)
+      fidget (>= 0.0.3)
+      gli (>= 2.0)
       htmlentities
       json
       nokogiri
@@ -30,7 +42,8 @@ GEM
       sinatra (~> 1.3)
       sinatra-websocket
       thin (~> 1.3)
-    sinatra (1.4.7)
+      tilt (>= 2.0.3)
+    sinatra (1.4.8)
       rack (~> 1.5)
       rack-protection (~> 1.4)
       tilt (>= 1.3, < 3)
@@ -41,8 +54,8 @@ GEM
     thin (1.6.4)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
-      rack (~> 1.0)
-    tilt (2.0.2)
+      rack (>= 1, < 3)
+    tilt (2.0.7)
 
 PLATFORMS
   ruby