Fix #173

Seems some deps where removed at some time in the past, or were missed
during a merge.

Gemfile

@@ -92,3 +92,7 @@ gem 'open-uri-cached'
 
 # RSS/Atom parsing
 gem "feedjira"
+
+gem "launchy"
+gem "slop"
+gem "chronic"

Gemfile.lock

@@ -15,6 +15,7 @@ GEM
     builder (3.2.2)
     celluloid (0.16.0)
       timers (~> 4.0.0)
+    chronic (0.10.2)
     chunky_png (1.3.4)
     coderay (1.1.0)
     coffee-script (2.4.1)
@@ -63,6 +64,8 @@ GEM
     i18n (0.7.0)
     json (1.8.2)
     kramdown (1.6.0)
+    launchy (2.4.3)
+      addressable (~> 2.3)
     less (2.6.0)
       commonjs (~> 0.2.7)
     libv8 (3.16.14.7)
@@ -142,7 +145,7 @@ GEM
       rack
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails-assets-jquery (1.11.2)
+    rails-assets-jquery (1.12.2)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
@@ -152,6 +155,7 @@ GEM
     ruby18_source_location (0.2)
     sass (3.4.13)
     sax-machine (1.3.1)
+    slop (3.6.0)
     sprockets (2.12.3)
       hike (~> 1.2)
       multi_json (~> 1.0)
@@ -196,10 +200,12 @@ DEPENDENCIES
   asciidoctor
   bootstrap-sass (= 3.0.0.0)
   builder (~> 3.0)
+  chronic
   coderay
   compass (~> 1.0.0.alpha.21)
   feedjira
   font-awesome-middleman
+  launchy
   less
   middleman (~> 3.3.3)
   middleman-blog
@@ -214,6 +220,7 @@ DEPENDENCIES
   rails-assets-jquery (~> 1)
   redcarpet
   ruby18_source_location
+  slop
   stringex
   therubyracer
   wdm (~> 0.1.0)