update gems

presentations/ember-js-vienna/todo/Gemfile.lock

 GEM
   remote: https://rubygems.org/
   specs:
-    bcrypt (3.1.10)
+    bcrypt (3.1.13)
     bson (1.9.2)
     bson_ext (1.9.2)
       bson (~> 1.9.2)
@@ -11,36 +11,52 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
-    celluloid (0.16.0)
-      timers (~> 4.0.0)
-    childprocess (0.5.5)
+    celluloid (0.17.4)
+      celluloid-essentials
+      celluloid-extras
+      celluloid-fsm
+      celluloid-pool
+      celluloid-supervision
+      timers (>= 4.1.1)
+    celluloid-essentials (0.20.5)
+      timers (>= 4.1.1)
+    celluloid-extras (0.20.5)
+      timers (>= 4.1.1)
+    celluloid-fsm (0.20.5)
+      timers (>= 4.1.1)
+    celluloid-pool (0.20.5)
+      timers (>= 4.1.1)
+    celluloid-supervision (0.20.6)
+      timers (>= 4.1.1)
+    childprocess (0.9.0)
       ffi (~> 1.0, >= 1.0.11)
-    chromedriver2-helper (0.0.8)
+    chromedriver2-helper (0.0.10)
       nokogiri
     cliver (0.3.2)
-    coderay (1.1.0)
+    coderay (1.1.2)
     configurations (2.0.0)
-    daemons (1.1.9)
-    diff-lcs (1.2.5)
-    eventmachine (1.0.7)
-    execjs (2.3.0)
+    daemons (1.3.1)
+    diff-lcs (1.3)
+    eventmachine (1.2.7)
+    execjs (2.7.0)
     faye-websocket (0.7.5)
       eventmachine (>= 0.12.0)
       websocket-driver (>= 0.3.5)
-    ffi (1.9.6)
+    ffi (1.12.2)
     hike (1.2.3)
-    hitimes (1.2.2)
     json (2.3.0)
-    listen (2.8.5)
+    listen (2.8.6)
       celluloid (>= 0.15.2)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
-    method_source (0.8.2)
-    mime-types (2.4.3)
+    method_source (0.9.2)
+    mime-types (3.3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2019.1009)
     mini_portile2 (2.4.0)
     mongo (1.9.2)
       bson (~> 1.9.2)
-    multi_json (1.10.1)
+    multi_json (1.14.1)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     opal (0.6.3)
@@ -59,22 +75,22 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
-    rack (1.5.2)
+    rack (1.5.5)
     rack-mount (0.8.3)
       rack (>= 1.0.0)
-    rack-test (0.6.3)
-      rack (>= 1.0)
+    rack-test (1.1.0)
+      rack (>= 1.0, < 3)
     rake (10.0.4)
-    rb-fsevent (0.9.4)
-    rb-inotify (0.9.5)
-      ffi (>= 0.5.0)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     rspec-core (3.1.7)
       rspec-support (~> 3.1.0)
     rspec-expectations (3.1.2)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.1.0)
     rspec-support (3.1.2)
-    rubyzip (1.1.7)
+    rubyzip (1.3.0)
     sass (3.2.19)
     selenium-webdriver (2.43.0)
       childprocess (~> 0.5)
@@ -84,7 +100,7 @@ GEM
     slop (3.6.0)
     source_map (3.0.1)
       json
-    sprockets (2.12.3)
+    sprockets (2.12.5)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
@@ -92,17 +108,15 @@ GEM
     sprockets-sass (1.0.3)
       sprockets (~> 2.0)
       tilt (~> 1.1)
-    thin (1.6.3)
+    thin (1.6.4)
       daemons (~> 1.0, >= 1.0.9)
-      eventmachine (~> 1.0)
+      eventmachine (~> 1.0, >= 1.0.4)
       rack (~> 1.0)
-    thor (0.19.1)
+    thor (0.19.4)
     tilt (1.4.1)
-    timers (4.0.1)
-      hitimes
-    uglifier (2.7.0)
-      execjs (>= 0.3.0)
-      json (>= 1.8.0)
+    timers (4.3.0)
+    uglifier (4.2.0)
+      execjs (>= 0.3.0, < 3)
     volt (0.8.26)
       bcrypt (~> 3.1.9)
       bundler (>= 1.5)
@@ -127,7 +141,7 @@ GEM
       uglifier (>= 2.4.0)
       volt-sockjs (~> 0.3.4.4)
       yui-compressor (>= 0.12.0)
-    volt-bootstrap (0.0.10)
+    volt-bootstrap (0.1.0)
     volt-bootstrap-jumbotron-theme (0.0.5)
     volt-fields (0.0.13)
     volt-sockjs (0.3.4.4)
@@ -136,13 +150,13 @@ GEM
       rack
       rack-mount (~> 0.8.3)
       thin
-    volt-user-templates (0.0.4)
+    volt-user-templates (0.1.0)
       volt-fields (~> 0.0.11)
-    websocket (1.2.1)
-    websocket-driver (0.5.1)
+    websocket (1.2.8)
+    websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.1)
-    xpath (2.0.0)
+    websocket-extensions (0.1.4)
+    xpath (2.1.0)
       nokogiri (~> 1.3)
     yui-compressor (0.12.0)