Merge pull request sinatra#57 from benilovj/patch-1

Fixed typo + error in sinatra-respond-with.html

_includes/sinatra-respond-with.html

@@ -14,7 +14,7 @@ <h1>Sinatra::RespondWith</h1>
       case type
       when 'text/html'
         halt haml(:index, :locals =&gt; data)
-      when 'text/json'
+      when 'application/json'
         halt data.to_json
       when 'application/atom+xml'
         halt nokogiri(:'index.atom', :locals =&gt; data)
@@ -63,7 +63,7 @@ <h1>Sinatra::RespondWith</h1>
 <h2>Security</h2>
 <p>
 Since methods are triggered based on client input, this can lead to
-security issues (but not as seviere as those might apear in the first
+security issues (but not as severe as those might appear in the first
 place: keep in mind that only known file extensions are used). You
 therefore should limit the possible formats you serve.
 </p>