Update gems to work with Ruby 2.2+

This is what is running on the server now.

.ruby-version

@@ -1 +1 @@
-1.9.3
+2.2.8

.travis.yml

@@ -1,5 +1,5 @@
 rvm:
-  - 2.3.0
+  - 2.2
 services:
   - redis-server
 before_install:

Gemfile.lock

@@ -1,9 +1,9 @@
 GIT
   remote: https://github.com/lazyatom/a2_printer.git
-  revision: 11c223b39695a04fe1246711356fa4d510dda47b
+  revision: 20c6db571bbd1e4cb322c4b892b6105ab6d839d0
   specs:
-    a2_printer (0.1.0)
-      serialport (~> 1.0.4)
+    a2_printer (0.2.0)
+      serialport (~> 1.3)
 
 GIT
   remote: https://github.com/lazyatom/recap.git
@@ -18,9 +18,12 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.2.8)
-    bcrypt-ruby (3.0.1)
-    capistrano (2.15.5)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
+    bcrypt (3.1.11)
+    bcrypt-ruby (3.1.5)
+      bcrypt (>= 3.1.3)
+    capistrano (2.15.9)
       highline
       net-scp (>= 1.0.0)
       net-sftp (>= 2.0.0)
@@ -36,14 +39,14 @@ GEM
       dm-transactions (~> 1.2.0)
       dm-types (~> 1.2.0)
       dm-validations (~> 1.2.0)
-    data_objects (0.10.12)
+    data_objects (0.10.17)
       addressable (~> 2.1)
     dm-aggregates (1.2.0)
       dm-core (~> 1.2.0)
     dm-constraints (1.2.0)
       dm-core (~> 1.2.0)
-    dm-core (1.2.0)
-      addressable (~> 2.2.6)
+    dm-core (1.2.1)
+      addressable (~> 2.3)
     dm-do-adapter (1.2.0)
       data_objects (~> 0.10.6)
       dm-core (~> 1.2.0)
@@ -72,70 +75,76 @@ GEM
       uuidtools (~> 2.1)
     dm-validations (1.2.0)
       dm-core (~> 1.2.0)
-    do_postgres (0.10.12)
-      data_objects (= 0.10.12)
-    dotenv (0.11.1)
-      dotenv-deployment (~> 0.0.2)
-    dotenv-deployment (0.0.2)
+    do_postgres (0.10.17)
+      data_objects (= 0.10.17)
     fastercsv (1.5.5)
-    foreman (0.74.0)
-      dotenv (~> 0.11.1)
+    ffi (1.9.18)
+    foreman (0.84.0)
       thor (~> 0.19.1)
-    highline (1.6.21)
-    json (1.7.7)
-    json_pure (1.7.7)
-    kgio (2.8.0)
-    metaclass (0.0.1)
-    minitest (5.10.1)
-    mocha (0.13.2)
+    highline (1.7.10)
+    json (1.8.6)
+    json_pure (1.8.6)
+    kgio (2.11.1)
+    metaclass (0.0.4)
+    minitest (5.11.1)
+    mocha (1.3.0)
       metaclass (~> 0.0.1)
-    multi_json (1.6.1)
+    mono_logger (1.1.0)
+    multi_json (1.13.1)
+    mustermann (1.0.1)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-sftp (2.1.2)
       net-ssh (>= 2.6.5)
-    net-ssh (2.9.1)
-    net-ssh-gateway (1.2.0)
-      net-ssh (>= 2.6.5)
+    net-ssh (4.2.0)
+    net-ssh-gateway (2.0.0)
+      net-ssh (>= 4.0.0)
     open4 (1.3.4)
-    rack (1.5.2)
-    rack-protection (1.3.2)
+    public_suffix (3.0.1)
+    rack (2.0.3)
+    rack-protection (2.0.0)
       rack
-    rack-test (0.6.2)
-      rack (>= 1.0)
-    raindrops (0.10.0)
-    rake (10.0.3)
-    redis (3.0.2)
-    redis-namespace (1.2.1)
-      redis (~> 3.0.0)
-    resque (1.23.0)
+    rack-test (0.8.2)
+      rack (>= 1.0, < 3)
+    raindrops (0.19.0)
+    rake (12.3.0)
+    rb-fsevent (0.10.2)
+    rb-inotify (0.9.10)
+      ffi (>= 0.5.0, < 2)
+    redis (4.0.1)
+    redis-namespace (1.6.0)
+      redis (>= 3.0.4)
+    resque (1.27.4)
+      mono_logger (~> 1.0)
       multi_json (~> 1.0)
-      redis-namespace (~> 1.0)
+      redis-namespace (~> 1.3)
       sinatra (>= 0.9.2)
       vegas (~> 0.1.2)
-    resque-pool (0.3.0)
+    resque-pool (0.6.0)
       rake
-      resque (~> 1.20)
-      trollop (~> 1.16)
-    rmagick (2.13.2)
-    sass (3.2.6)
-    serialport (1.0.4)
-    sinatra (1.3.5)
-      rack (~> 1.4)
-      rack-protection (~> 1.3)
-      tilt (~> 1.3, >= 1.3.3)
+      resque (~> 1.22)
+    rmagick (2.16.0)
+    sass (3.5.5)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    serialport (1.3.1)
+    sinatra (2.0.0)
+      mustermann (~> 1.0)
+      rack (~> 2.0)
+      rack-protection (= 2.0.0)
+      tilt (~> 2.0)
     stringex (1.5.1)
-    thor (0.19.1)
-    tilt (1.3.3)
-    trollop (1.16.2)
-    unicorn (4.6.2)
+    thor (0.19.4)
+    tilt (2.0.8)
+    unicorn (5.4.0)
       kgio (~> 2.6)
-      rack
       raindrops (~> 0.7)
-    uuidtools (2.1.3)
+    uuidtools (2.1.5)
     vegas (0.1.11)
       rack (>= 1.0.0)
-    yajl-ruby (1.1.0)
+    yajl-ruby (1.3.1)
 
 PLATFORMS
   ruby
@@ -160,4 +169,4 @@ DEPENDENCIES
   yajl-ruby
 
 BUNDLED WITH
-   1.14.6
+   1.16.1