The default Github Enterprise installation exposes its API at endpoints prefixed with /api/v3. The current version of Octokit, however, has a bug where when configuring the api_endpoint, as recommended, results in requests to an incorrect url.

##Expected behavior:

Configuring the Octokit client's api_endpoint value as

client = Octokit::Client.new(
  api_endpoint: "https://somedomain.com/api/v3",
  client_id: "123"
)

then calling client.check_application_authorization("some-token")

should result in a request to

https://somedomain.com/api/v3/applications/abc/tokens/some-token

##Actual behavior:

A request is made to

https://somedomain.com/applications/abc/tokens/some-token

Notice the omitted /api/v3

##Steps to reproduce

run rspec spec/test.rb from the root of this repository

##Investigation

The problem can be traced down to where the request url is built in Faraday

On these lines, base is a URI instance and the + operator is defined on URI as an alias to merge which does not exhibit the same behavior as concatenation and is why the /api/v3 portion of the path gets lost.

##Proposed resolution

At the moment, I'm not certain how to correct this issue from Octokit's point of view, but am happy to help.