Ensure that the webapp can still be run locally

% PATH=./vendor/bin:$PATH GEM_HOME=./vendor rackup src/main/webapp/WEB-INF/config.ru

src/main/webapp/WEB-INF/app.rb

@@ -9,7 +9,7 @@ if File.exists?(vendored_gems)
   ENV['GEM_HOME'] = vendored_gems
 end
 
-jar_cache = File.expand_path(File.dirname(__FILE__) + '/.jarcache/')
+jar_cache = File.expand_path(File.dirname(__FILE__) + '/../../../../.jarcache/')
 if File.exists?(jar_cache)
   Dir["#{jar_cache}/*.jar"].each { |j| require j }
 end

src/main/webapp/WEB-INF/config.ru

@@ -1,3 +1,6 @@
+# Pull in our current path to make sure we can safely require app.rb
+$LOAD_PATH.unshift(File.expand_path(File.dirname(__FILE__)))
+
 require 'app'
 
 map '/' do