comment out debugger since it does not compile on travis

Gemfile

@@ -33,7 +33,7 @@ end
 group :development do
   gem 'foreman'
   gem 'rerun'
-  gem 'debugger'
+  # gem 'debugger'
 end
 
 group :development, :test do

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: git://github.com/getsentry/raven-ruby.git
-  revision: d71dd4daaa2a442c4b8c0b66e18f981f1a354f75
+  revision: aae491302e3fddac3438a022ce168c23f164ce6e
   specs:
     sentry-raven (0.3.1)
       faraday (>= 0.7.6)
@@ -36,7 +36,7 @@ GIT
 
 GIT
   remote: git://github.com/sinatra/sinatra-contrib.git
-  revision: 204713dce6df6528a837fb58fc956bee7cfcbc18
+  revision: a7a7acdcbd5c51388633a98471d6f7506cce4712
   specs:
     sinatra-contrib (1.4.0)
       backports (>= 2.0)
@@ -163,7 +163,6 @@ GEM
       timers (>= 1.0.0)
     coder (0.3.0)
     coderay (1.0.8)
-    columnize (0.3.6)
     connection_pool (0.9.3)
     daemons (1.1.9)
     dalli (2.6.0)
@@ -171,17 +170,10 @@ GEM
       activerecord
       rake
     database_cleaner (0.8.0)
-    debugger (1.2.2)
-      columnize (>= 0.3.1)
-      debugger-linecache (~> 1.1.1)
-      debugger-ruby_core_source (~> 1.1.5)
-    debugger-linecache (1.1.2)
-      debugger-ruby_core_source (>= 1.1.1)
-    debugger-ruby_core_source (1.1.5)
     diff-lcs (1.1.3)
     erubis (2.7.0)
     eventmachine (1.0.0)
-    facter (1.6.16)
+    facter (1.6.17)
     factory_girl (2.4.2)
       activesupport
     faraday (0.8.4)
@@ -198,7 +190,7 @@ GEM
     journey (1.0.4)
     json (1.7.6)
     kgio (2.7.4)
-    listen (0.6.0)
+    listen (0.7.0)
     mail (2.4.4)
       i18n (>= 0.4.0)
       mime-types (~> 1.16)
@@ -307,7 +299,6 @@ DEPENDENCIES
   bunny
   dalli
   database_cleaner (~> 0.8.0)
-  debugger
   factory_girl (~> 2.4.0)
   foreman
   gh!