Added target/* to the .gitignore file
Fixing request to 2.47.0 til https://github.com/request/caseless/issues/9 has been fixed
Not sticking `app` on the expressjs request object

This was (indirectly) breaking cookie-Session as `app` is a restricted
variable on the ExpressJS request object.
Made request a devDependency only
Renamed ghApp back to app for internal API
Allow for a custom config file to be specified
Follow up on review to allow for specification of an alternative config.js file
Remove app conflict with outer app variable
Merge branch 'master' of https://github.com/fronteerio/grasshopper