update dependencies

Gemfile

@@ -1,10 +1,12 @@
 source 'https://rubygems.org'
 
+ruby '2.2.2'
+
 gem 'rack'
 gem 'thin'
 gem 'mustache'
 
-group :test do
+group :deployment, :test do
   gem 'rspec'
   gem 'rack-test'
   gem 'rake'

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    coveralls (0.8.1)
+    coveralls (0.8.2)
       json (~> 1.8)
       rest-client (>= 1.6.8, < 2)
       simplecov (~> 0.10.0)
@@ -17,7 +17,7 @@ GEM
       domain_name (~> 0.5)
     json (1.8.3)
     mime-types (2.6.1)
-    mustache (1.0.1)
+    mustache (1.0.2)
     netrc (0.10.3)
     rack (1.6.4)
     rack-test (0.6.3)
@@ -36,7 +36,7 @@ GEM
     rspec-expectations (3.3.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.3.0)
-    rspec-mocks (3.3.0)
+    rspec-mocks (3.3.1)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.3.0)
     rspec-support (3.3.0)
@@ -45,14 +45,14 @@ GEM
       json (~> 1.8)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
-    term-ansicolor (1.3.1)
+    term-ansicolor (1.3.2)
       tins (~> 1.0)
     thin (1.6.3)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0)
       rack (~> 1.0)
     thor (0.19.1)
-    tins (1.5.2)
+    tins (1.5.4)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.1)