Fix Sinatra Rackup specification. Fixes issue #469. [ci:skip]
Fix Sinatra Rackup specification. Fixes issue #469.
[ci:skip]

cgvarela/passenger,bf4/passenger,cgvarela/passenger,bf4/passenger,clemensg/passenger,antek-drzewiecki/passenger,antek-drzewiecki/passenger,phusion/passenger,cgvarela/passenger,jawj/passenger,bf4/passenger,bf4/passenger,phusion/passenger,phusion/passenger,cgvarela/passenger,antek-drzewiecki/passenger,cgvarela/passenger,antek-drzewiecki/passenger,kewaunited/passenger,phusion/passenger,phusion/passenger,phusion/passenger,antek-drzewiecki/passenger,kewaunited/passenger,kewaunited/passenger,clemensg/passenger,bf4/passenger,cgvarela/passenger,kewaunited/passenger,kewaunited/passenger,jawj/passenger,jawj/passenger,jawj/passenger,jawj/passenger,jawj/passenger,clemensg/passenger,clemensg/passenger,jawj/passenger,bf4/passenger,cgvarela/passenger,kewaunited/passenger,clemensg/passenger,phusion/passenger,clemensg/passenger,clemensg/passenger,antek-drzewiecki/passenger,bf4/passenger,cgvarela/passenger,phusion/passenger,kewaunited/passenger,clemensg/passenger,antek-drzewiecki/passenger,antek-drzewiecki/passenger,kewaunited/passenger