Fix: spec fixes for Ruby 1.8.7.

Author: dblock

lib/grape/middleware/formatter.rb

@@ -15,7 +15,7 @@ def default_options
       end
 
       def headers
-        env.dup.inject({}){|h,(k,v)| h[k.to_s.downcase[5..-1]] = v if k.downcase.to_s.start_with?('http_'); h}
+        env.dup.inject({}){|h,(k,v)| h[k.to_s.downcase[5..-1]] = v if k.to_s.downcase.start_with?('http_'); h}
       end
 
       def before

spec/grape/endpoint_spec.rb

@@ -182,12 +182,12 @@ def app; subject end
       end
 
       it 'should convert JSON bodies to params' do
-        post '/request_body', MultiJson.encode(user: 'Bobby T.'), {'CONTENT_TYPE' => 'application/json'}
+        post '/request_body', MultiJson.encode(:user => 'Bobby T.'), {'CONTENT_TYPE' => 'application/json'}
         last_response.body.should == 'Bobby T.'
       end
 
       it 'should convert JSON bodies to params' do
-        put '/request_body', MultiJson.encode(user: 'Bobby T.'), {'CONTENT_TYPE' => 'application/json'}
+        put '/request_body', MultiJson.encode(:user => 'Bobby T.'), {'CONTENT_TYPE' => 'application/json'}
         last_response.body.should == 'Bobby T.'
       end
 
@@ -205,7 +205,7 @@ def app; subject end
         subject.post '/omitted_params' do
           body_params[:version].should == nil
         end
-        post '/omitted_params', MultiJson.encode(user: 'Blah'), {'CONTENT_TYPE' => 'application/json'}
+        post '/omitted_params', MultiJson.encode(:user => 'Blah'), {'CONTENT_TYPE' => 'application/json'}
       end
     end
   end