Update Ruby version to 2.1.0

.ruby-version

@@ -1 +1 @@
-2.0.0-p353
+2.1.0

.travis.yml

@@ -1,7 +1,6 @@
 ---
-before_install: gem install bundler --pre
 before_script: bundle exec rake db:create db:schema:load
 bundler_args: --without assets:development:production
 language: ruby
 rvm:
-- 2.0.0
+- 2.1.0

Gemfile

@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby '2.0.0'
+ruby '2.1.0'
 
 gem 'rails', '~> 4.0.1'
 
@@ -23,15 +23,9 @@ group :assets do
   gem 'uglifier'
 end
 
-group :development do
-  gem 'debugger'
-end
-
 group :development, :test do
   gem 'pry'
-  gem 'pry-debugger', :platforms => :mri_19
   gem 'pry-rescue'
-  gem 'pry-stack_explorer', :platforms => :mri_19
 end
 
 group :production do

Gemfile.lock

@@ -29,8 +29,6 @@ GEM
     arel (4.0.1)
     atomic (1.1.14)
     bcrypt-ruby (3.1.2)
-    binding_of_caller (0.7.2)
-      debug_inspector (>= 0.0.1)
     builder (3.1.4)
     coderay (1.1.0)
     coffee-rails (4.0.1)
@@ -40,7 +38,6 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.6.3)
-    columnize (0.3.6)
     coveralls (0.7.0)
       multi_json (~> 1.3)
       rest-client
@@ -49,13 +46,6 @@ GEM
       thor
     crack (0.4.1)
       safe_yaml (~> 0.9.0)
-    debug_inspector (0.0.2)
-    debugger (1.6.3)
-      columnize (>= 0.3.1)
-      debugger-linecache (~> 1.2.0)
-      debugger-ruby_core_source (~> 1.2.4)
-    debugger-linecache (1.2.0)
-    debugger-ruby_core_source (1.2.4)
     devise (3.2.2)
       bcrypt-ruby (~> 3.0)
       orm_adapter (~> 0.1)
@@ -103,15 +93,9 @@ GEM
       coderay (~> 1.0)
       method_source (~> 0.8)
       slop (~> 3.4)
-    pry-debugger (0.2.2)
-      debugger (~> 1.3)
-      pry (~> 0.9.10)
     pry-rescue (1.2.0)
       interception (>= 0.3)
       pry
-    pry-stack_explorer (0.4.9.1)
-      binding_of_caller (>= 0.7)
-      pry (>= 0.9.11)
     puma (2.7.1)
       rack (>= 1.1, < 2.0)
     rack (1.5.2)
@@ -206,7 +190,6 @@ PLATFORMS
 DEPENDENCIES
   arel
   coveralls
-  debugger
   devise
   fastercsv
   geokit
@@ -215,9 +198,7 @@ DEPENDENCIES
   nokogiri
   pg
   pry
-  pry-debugger
   pry-rescue
-  pry-stack_explorer
   puma
   rails (~> 4.0.1)
   rails_12factor