adding better errors gem

Gemfile

@@ -20,6 +20,8 @@ group :development do
   gem 'rack-livereload'
   gem 'rb-fsevent'
 	gem 'travis-lint'
+  gem 'better_errors'
+  gem 'binding_of_caller'
 end
 
 gem 'gauntlt'

Gemfile.lock

@@ -35,6 +35,11 @@ GEM
       cucumber (>= 1.1.1)
       rspec-expectations (>= 2.7.0)
     bcrypt-ruby (3.0.1)
+    better_errors (1.0.1)
+      coderay (>= 1.0.0)
+      erubis (>= 2.6.6)
+    binding_of_caller (0.7.2)
+      debug_inspector (>= 0.0.1)
     brakeman (1.9.5)
       erubis (~> 2.6)
       fastercsv (~> 1.5)
@@ -72,6 +77,7 @@ GEM
       gherkin (~> 2.12.0)
       multi_json (~> 1.3)
     database_cleaner (1.0.1)
+    debug_inspector (0.0.2)
     diff-lcs (1.2.4)
     em-websocket (0.5.0)
       eventmachine (>= 0.12.9)
@@ -247,6 +253,8 @@ PLATFORMS
 DEPENDENCIES
   aruba
   bcrypt-ruby
+  better_errors
+  binding_of_caller
   brakeman
   bundler-audit
   capybara